Serious Sam 3: BFE Complete Guide (21 Sections) | AntMag

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Serious Sam 3: BFE throws you into the boots of Sam "Serious" Stone, a one-liner-spouting action hero tasked with defending Earth from an alien invasion led by the tyrannical Mental. You’ll be blasting through hordes of bizarre enemies across the desolate landscapes of Egypt, from ancient ruins to sprawling deserts. It’s pure, unadulterated arcade shooter action where dodging, strafing, and unleashing Sam's ridiculous arsenal are key to survival against overwhelming odds.

This guide is your ticket to mastering the chaos. We’ll walk you through every mission, from navigating the treacherous desert ruins to surviving the onslaught of every boss encounter. Plus, we'll help you uncover every secret and achieve that coveted Gold Medal, ensuring you can truly conquer Mental’s relentless forces.

Part 1

Walkthrough

1
Leave the shack and turn left. A Gnaar will attack. Use E or the left mouse button (PC controls) to rip its eye out.
2
Head to the edge of the building and throw the eye towards the green light to receive a shotgun. Use it to kill another Gnaar. (Secret 1/17)
3
Go around the next corner and jump to the building across the way. Behind a small shack, find a secret sledgehammer (2/17).
4
Jump down the building. Turn right and go to the next roof. Turn back to the starting building and jump to the grated balcony.
5
Turn around and jump to the second balcony from the top to collect secret shotgun shells (3/17).
6
Jump to the next grated balcony, then to ground level.
7
Facing the starting building, turn left and proceed. In an alley on the left, find a small green thing. Grab the secret shotgun shells.
8
Turn right and kill a Beheaded Rocketeer (4/17).
9
Head out of the alley and turn left to emerge on a street. Kill an attacking Gnaar and head forward.
10
Go around the blue dumpster to the right to find wooden crates. Jump on them, then to the dumpster, then to a red object, and finally to a balcony for some secret armor (5/17).
11
Jump down and head to the end of the street with strange writing. A giant alien will pass by.
12
Turn right into an alley, grabbing two red health pills. Go forward, kill a Gnaar that emerges from the wall, and grab more health.
13
Enter the hole the Gnaar made to come out on a street. Kill the Gnaars that attack.
14
At the end of this street, behind a wall, find some health.
15
Enter an alley on the right side of the street. A Gnaar attacks. Find health pills in the garages to the right and at the end.
16
Facing where you came from, turn left, then at the end go right. Take the single health pill for a mini-secret (6/17).
17
Exit and go to the end of the street. Turn left. A garage to the left holds more health.
18
Enter a hole in the brick wall.

Tips

The walkthrough is designed for Serious difficulty.
Use E or the left mouse button (PC controls) to interact with objects and enemies.
Secret items are marked with (Secret X/17).

Part 2

Walkthrough

1
Beware of a Gnaar attack from the left before entering a building; turn around and enter the garage for health.
2
Leave the garage, cross the alley, find a pill on a barrel, and another garage with pills to the left.
3
Go to the other side, turn left into a small passage. On the right, find health and stairs. Climb the stairs, jumping over gaps.
4
On a balcony, find the secret classic outfit (7/17) and earn the 'Classic Outfit' achievement.
5
Return to the bottom and exit through the hallway to the right.
6
Cross the street into another alley. Find a garage with health to the right.
7
Go up to the wall, turn right to see another wall with a small gap obscured by a bush.
8
Enter the gap and grab secret electric ammo (8/17).
9
Leave the secret area, turn left. Find another health garage to the right.
10
Return to the street and go left. Kill the Beheaded Rocketeer.
11
Continue down the street, witness an alien ship destroy a building, then grab health pickups and kill Gnaars and Beheaded Rocketeers.
12
After clearing enemies, find a small garage with an armor shard.
13
Turn around, cross the yard for another garage with a 10 armor pickup.
14
Head to the back, find a wooden shack with health pills.
15
Go to the brick wall left of the armor shard garage, go through the hole. Behind a gray dumpster, find a wall with structural problems.
16
Smash the wall with the sledgehammer and enter the secret yard for armor (9/17).
17
Leave the yard, turn left. Cross the yard and grab more health.
18
Exit, turn right, grab health and a pistol from a dead guy.
19
Go forward, shoot a Beheaded Kamikaze, then turn around.
20
Facing away from the archway the Kamikaze came from, jump on the pile of crates and over the wall into a secret yard (10/17).
21
Grab the assault rifle ammo, then jump back over the wall using crates.
22
Go through the archway. To the right, kill several Rocketeers and Gnaars.
23
Across the street from the archway, to the left, find a blue dumpster with a barrel.
24
Jump on the barrel, then the dumpster, then over the gate into a secret yard (11/17).
25
Use the sledgehammer to get armor. Kill the two Kleer Skeletons that appear.
26
Use the truck to jump back over the gate with your pistol. Shoot the attacking Kamikaze quickly.
27
Return to the secret yard. Jump on crates and onto rooftops to the right.
28
Go left and shoot the Kamikaze in the distance.
29
Jump across roofs to get secret shotgun shells (12/17).
30
Turn right to see a pill on the corner. Jump to grab it and get another secret (13/17). Try to land on the wall.
31
Return to the shotgun shell roof, then the main roof. Go left.
32
In an alley on the ground, find secret electricity ammo (14/17).
33
Use crates to enter the parking lot.
34
At the shotgun shell building, find pills on one side and a 10 health pickup on the other.
35
On the other side of the lot, find a shack with barrels and pills on the barrels.
36
Face the hill. Find two rows of garages back-to-back with planks between them.
37
Smash the planks with the sledgehammer and go to the right side. Jump onto the car and onto the garages.
38
Go into the crack between the garages and grab secret assault rifle bullets (15/17). Exit using a barrel.
39
Go to the lot exit (away from the hill) and grab armor.
40
Return to the street. Turn left and start backpedalling. Kill attacking Kamikazes and Gnaars.
41
Go to the end of the street and take the 4 lined-up health pills.
42
Return to the parking lot. Note Beheaded Rocketeers appearing to the left.
43
Approach the hill. A lone Kamikaze will charge; shoot him and start backpedaling.
44
A large group of Kamikazes will attack; try to retreat into the street if necessary.
45
After clearing the Kamikazes, go over the hill into a yard with an obelisk.
46
While Sam is contacted by HQ, go to the far left corner of the yard for shotgun shells.
47
Shoot many Rocketeers. After they are dead, kill the Kamikazes.
48
Find armor and health by the downed chopper if needed.
49
Find a secret armor in an alley on the far left (16/17).
50
Kill the few remaining Rocketeers.
51
Equip your sledgehammer and head towards the museum entrance.
52
Kill the 4 Gnaars that appear.
53
Go forward, grab a health pill, and approach the big tablet on the wall.
54
Translate the tablet to get the 'Apprentice Egyptologist' achievement.
55
Go forward and enter the courtyard to find Professor Stein.
56
On the left side of the entrance, find health pills.
57
Go right to collect several armor shards.
58
Go to the right corner of the museum. Near a dead body, find armor and health pills.
59
Continue around and take two more health pills on a crate.
60
Going forward, find a ten health pickup on another crate.
61
When you reach the other side, several Kleers will jump out of a window. Kill them all.
62
A message will state the secret Arc de Triomphe has been enabled.
63
Turn around and walk into the strange rock structure for the Arc de Triomphe secret (17/17).
64
Kill the four Kamikazes that attack.

Tips

Be mindful of enemy spawns, especially Gnaars and Kamikazes, which often attack from unexpected directions.
Utilize the sledgehammer to break through weak walls and access secret areas.
Conserve ammo when possible, as health and armor pickups are plentiful if you explore thoroughly.
The minimap (radar (your minimap with nearby blips and threats marked)) can help you orient yourself and spot nearby pickups or enemy positions.
Remember to check behind obstacles and in less obvious paths for secrets.

Part 3

Walkthrough

1
Begin by turning right and looking between the second and third machines for secret shotgun shells (1/9).
2
Climb the stairs, go into the hallway, and collect the health.
3
Turn left, smash crates and planks for secret assault rifle ammo (2/9).
4
Continue through the hall, find armor, and another Egyptian tablet.
5
Climb the stairs to a large hallway. Smash eggs and defeat emerging Antaresian Hatchlings with the sledgehammer.
6
At the end of the hall, find a door and the third Egyptian tablet to its right.
7
Enter the next room, defeat Hatchlings and a Juvenile, and take health and armor.
8
Clear the next room of Hatchlings and take health.
9
In the next corridor, kill Juveniles attacking from the left and take health to the right.
10
At the end of the corridor, grab armor.
11
Head the other way down the corridor. Go into the room on the left and find secret shotgun shells in the far right corner behind a column (3/9).
12
Find the fourth Egyptian tablet on the floor.
13
Return to the hall and proceed to the end. Kill the charging Kamikaze.
14
Take health, climb stairs, kill a Hatchling on the ground and one on the ceiling.
15
Grab nearby armor and enter the next hallway. Kill 2 Juveniles and a Hatchling.
16
Walk through the "No Entry" door on the right side of the corridor and enter the next room for a secret double-barrel shotgun (4/9).
17
Return to the corridor and go right.
18
In the next hall, shoot a Hatchling above and a Juvenile across the hall.
19
Enter the second room on the left and kill a Juvenile.
20
Go into the next room on the right and kill another Juvenile.
21
Grab health in the far left corner and smash a cabinet to find and press a button.
22
Return to the hall. Before entering the next door, climb on the railing and follow the narrow ledge on the wall to the other side of the room. Grab secret 50 health (5/9).
23
Enter the slightly open door for another secret (6/9).
24
Go to the next room and take secret 50 armor (7/9).
25
(Optional Shortcut) Enter the next room and jump down into the one below to skip the next four paragraphs and reach the end of the level.
26
Return to the left balcony and enter the corridor.
27
Enter the room on the right and proceed down another corridor.
28
Shoot a Juvenile and a Hatchling egg.
29
Continue into the basement, collecting armor shards.
30
Grab health pills and decipher the tablet to the left.
31
Go through the hall, taking pills and 10 health in the room on the right.
32
Continue and view a cutscene. After it ends, you'll get the "Wanted Dead or Alive" achievement.
33
Look behind you and translate the next tablet.
34
Smash all eggs and Hatchlings in this room.
35
A Gnaar and more Hatchlings will attack from the far right side of the room.
36
Continue to an intersection. Kill the Gnaar to the left.
37
Look behind the sphinx for a button and press it to reveal secret electricity ammo (8/9).
38
The cubby to the left has health.
39
Keep going through the hall to find more health in another cubby on the left.
40
Move to the next room. Kill 2 Gnaars and scramble the eggs.
41
Continue through the corridor, killing more Hatchlings.
42
Go to the next T-intersection and turn right.
43
Take 25 health and smash the cabinet.
44
Enter a spooky hall with a ghost of a soldier and take the secret Lasergun (9/9).
45
Return to the main hallway and keep going.
46
In the next room, kill Hatchlings and the first Shotgunner.
47
Grab health in the far right corner.
48
Continue into the next hallway. Grab health on the left.
49
Kill 2 Gnaars in the next room.
50
Proceed further and kill two more Gnaars.
51
Grab 3 armor shards and a health pack.
52
Kill several Juveniles and Hatchlings.
53
Continue down the hallway.
54
In the next room, go around the stairs for armor.
55
Climb the stairs and take health and armor.
56
In the next hallway, kill several Shotgunners. Take their shotguns.
57
A cubby on the left has a health pickup.
58
Continue through the hallway, killing Shotgunners.
59
Another cubby on the left has armor.
60
Climb the stairs.

Tips

On Christmas day, a special Christmas tree appears in the first level. Throwing a Gnaar eye, Rocketeer heart, and Kleer head (obtained via melee kills) at it earns the "Christmas In Cairo" achievement.
The Gnaar is the first non-spider enemy encountered in this level.
If you missed the first secret shotgun in "Summer in Cairo", the Shotgunner in the next room drops his shotgun, allowing you to obtain one.
A shortcut is available by jumping down into the room below after finding secret 50 armor (7/9), skipping several paragraphs of the walkthrough.

Serious Beginner Achievement
Christmas In Cairo Achievement (conditional)
Wanted Dead or Alive Achievement
Secret Shotgun Shells (1/9)
Secret Assault Rifle Ammo (2/9)
Secret Shotgun Shells (3/9)
Secret Double-Barrel Shotgun (4/9)
Secret 50 Health (5/9)
Secret Item (6/9)
Secret 50 Armor (7/9)
Secret Electricity Ammo (8/9)
Secret Lasergun (9/9)

Part 4

Walkthrough

1
Proceed through a hall, shooting Hatchling eggs and collecting shotgun shells and health. Kill Shotgunners in the room at the end, then proceed to the next room with more Shotgunners and a Hatchling.
2
Enter the next room, kill a lone Shotgunner and 2 Hatchlings, then climb over rubble.
3
In the following room, kill an Adult Arachnoid with the lasergun, followed by Gnaars. Collect health and armor, then go through the hole to end the level.
4
Receive a call to head to the Ibn Tulun mosque for extraction. Go forward and left into a passage.
5
Kill a Rifleman attacking from the left, proceed through the street, and kill another Rifleman.
6
Go through an opening, turn left, and take health in the garage.
7
Exit and enter another yard. Kill Shotgunners and watch out for a Rifleman on the roof. Collect health pills across from the entrance.
8
Go to the garage, find armor on the side near the wall. Jump on top of the car on the other side, then onto the roof for a vantage point.
9
Jump to the building where the Rifleman was for secret shotgun shells (1/16). Jump down and continue around the building. Find armor in a garage.
10
Continue through the next archway, killing Shotgunners and a Gnaar.
11
Jump on top of the dumpster, then over the wall. Collect secret armor (2/16) and use barrels to return to the main street.
12
Go to the garage down the street for shotgun, health, and armor. Across the street, another garage has health and shotgun shells.
13
Enter the next street. Kill Shotgunners attacking from the left. Cross the street and climb rubble. Find secret health (3/16) on the right side of the building.
14
Cross the street again, take shells in the garage. Exit and face it. Move right into an alley. Kill a Gnaar.
15
Take armor in the right garage and shotgun shells in the left. Exit the alley and go left.
16
Pass under the highway to trigger a massive Gnaar attack. Use the sledgehammer.
17
Move up the street. Find a Gnaar, shotgun shells, and secret health (4/16) in a cubby to the left.
18
Kill a Kleer that jumps over the wall. Return to the street and continue to trigger Gnaars and an Adult Arachnoid. Kill Gnaars first, then the Arachnoid with the lasergun.
19
Go to the end of the street, turn right, then right again. Shoot Riflemen on the highway. Smash planks to the right of the alley for secret electricity (5/16).
20
Enter the alley, turn right into another alley. Enter the building on the right for secret armor (6/16).
21
Cross the alley, go behind the wall. Take secret health and armor (7/16) and kill an attacking Kleer.
22
Exit this alley, pass under the highway, collecting health and armor. Kill Rocketeers, Kamikazes, and Riflemen.
23
Enter the garage on the left for shells. Enter the garage on the right for health. Go around this garage for secret shotgun and shells (8/16). Kill two attacking Rocketeers.
24
Jump on the dumpster, then over the wall into an alley. Use barrels to go over the wall for secret flanking (9/16).
25
Go down the alley to the left, take armor in the garage. Exit and enter the area under the highway. Kill attacking Riflemen.
26
Enter the alley on the left. Kill Rocketeers and Kamikazes attacking from behind. A garage to the left has shells, and one to the right has shells and health.
27
Re-enter the highway area. Smash planks blocking a room between regular and flanking entrances for secret armor and shells (10/16).
28
Cross the area and enter a cubby. An Adult Arachnoid passes but cannot be killed. Head right and climb stairs.
29
Jump over a hole in the stairs, then through a hole in the wall for secret health on the edge of the highway (11/16).
30
Climb back up to the second floor. Take shotgun shells and health. Hop down and kill the Adult Arachnoid.
31
Cross the street and take shotgun shells in the bus stop.
32
Continue down the street. Kill charging Gnaars and a Kamikaze.
33
On the right side of the highway, find a shotgun. Go to the end of the highway and turn right.
34
Kill Riflemen, Kamikazes, and Gnaars. Take nearby armor, shells, and health.
35
Go behind the wall for secret rocket ammo (12/16). Enter the suburbs.
36
Take health on the crate. Find armor on the right side of the area.
37
Enter the left alley and kill Riflemen. Go through the alley and take health and armor inside the store.
38
Exit and go left, killing cloned soldiers. Go through an archway on the right, then left, taking shells on the crate.
39
Go back through and continue, killing soldiers and Kamikazes.
40
Enter the alley on the right into a relatively open area. Kill more soldiers.
41
Go to the crates on the right.

Tips

Use the lasergun effectively against Adult Arachnoids.
The sledgehammer is recommended for large Gnaar attacks.
Utilize vantage points from rooftops and elevated positions to clear enemies.
Be aware of flanking enemies, especially after passing under highways.
Secret items are often found by breaking planks, jumping over walls, or exploring garages and alleys.