Part 24

Complete Part 24 of Doom (2016), including finding ARGENT CELL 10.1 and the Rich Get Richer upgrade.

You will land with the green suit of armor and a wood-grid-patterned door. It will open, allowing you to take the Yellow Skull. This is a trap. Continue through the hall in the direction of the greenish area with the gibbet. A grate will appear to block access to the yellow door. You must go left into a toxic area with a bunch of Unwilling (weakened demons) staggering around. You will see an Invulnerability Powerup here, and at the end of the corridor, an ELITE GUARD 10.2 and a Skull Switch. Activate the Skull Switch.

Mission 10: Fight: Toxic Sludge Area

On return, two hatches will open exposing 2 Mancubi. You can use the Invulnerability on them, or fight more carefully and save it for a minute. Once they are gone, take the Invulnerability if you haven't and run up the stairs to fight 3 Pinkies. After that, the Yellow Skull Door is accessible, and a CHECKPOINT (a save point). Before going through the Yellow Door, though, note that another passage has opened and get ARGENT CELL 10.1 (a collectible upgrade resource) and CODEX ENTRY "Monster / Pinky". If you want to get the Rich is Richer upgrade, it is recommended to wait for after the following fight.

Mission 10: Fight: Pounding Rock Area

The Yellow Skull Door opens to reveal what appears to be a red skull switch, but it's a trap: the floor drops out and suddenly you are fighting a Mancubus, then 2 Revenants and a Hell Knight with some Imps in the background. At some point, 2 more Mancubi and a Cyber-Mancubus spawn as well. Note that there's BFG ammo here, so if you are full, feel free to use it! The nearby acid pools allow you to reliably inflict just 1 point of damage, which makes this area very convenient to get the Rich Get Richer Rune upgrade. In order to do that, do NOT pick up all the armor during the fight; you want about 4-8 stray armor left, at least.

Mission 10: Pounding Rock Area

When the pounding rock is down, quickly climb onto it. It will lift you up to a Skull Switch: press it, and drop down. Before continuing toward the Yellow Door, which is currently gated off, look for a small alcove continuing the Classic Doom Map Lever. Pull it. The gate to the Yellow Skull Door will open: go that way and go back to the lower Toxic Sludge room (where the Mancubi appeared with the Elite Guard), and you'll find CLASSIC MAP 10.1 "Phobos Anomaly": SECRET 10.5. This area also has a Mega-Health (a large health pickup): Go down a corridor and interact with a discolored wall-panel on the right-side to get the Mega-Health. Go back to the Pounding Rock Area. Go toward a gated off green teleporter. Look left to see a large room with 2 Yellow Lifts and a Suit of Armor in the middle. Go in to what is called the Treasure Room, and pick up some loot and a Blue Skull; a fight is triggered on the way out.

Mission 10: Fight: Treasure Room

It starts right near the entrance/exit with 3 SPECTRES (invisible demons). This is quickly followed by some Imps and 4 Lost Souls. Then 2 Cacodaemons and 3 Mancubi. Finally, a Hell Baron. CHECKPOINT.

Mission 10: Segue

Now, after checking for stray supplies, enter the green teleporter (the bars will disappear as you approach). You'll be in a fiery yellow lit area. Grab CODEX ENTRY "Artifacts / Slayer's Testament V". Turn left for SECRET 10.6: a Mega Health (don't forget Rich Get Richer upgrade). Continuing along, you'll be back at the Rectangular Pit.

Mission 10: Fight: Rectangular Pit, Blue Skull Door Fight

A Berserk Powerup (melee damage boost) has been placed for this fight. It starts with many Imps and also includes a 3 Hell Knights, 2 Summoners, a Mancubus. It ends with a Hell Baron. Use the Blue Skull, and find immediately on the floor CODEX ENTRY "UAC Personnel / Olivia Pierce". Jump into the red teleporter.

Mission 11: The Necropolis

You find yourself in a central area of this level with the Yellow and Blue Skull doors adjacent.

Notes on Combat Challenges:

• A Pin Pops a Balloon: there are two clear opportunities for this. Right at the beginning, and after crossing the floating islands with Cacodaemons. Try both, since it can be pretty easy to kill the Mancubus accidentally. Dazed and Confused Rune can help a little as can ???.
• Two Mouths to Feed: when you cross on the floating islands there's an easy place to get this. Use Gauss Cannon / Siege Mode or BFG.
• Wait For It: By kicking the first barrel down the steps you can get 3 there; and the pre-fight in the Square room has 6 Possessed that are easy to get. There's a number of other chances if you don't die on those scenes (the kills count even if you die!).

Mission 11: Yellow Skull

To your left at ground level is a teleporter. Jump into it. Find CODEX ENTRY, "Monsters / Cyber-Mancubus".

Mission 11: Fight: Yellow Skull Prefight

Continue along to a barrel at the top of the stairs; if you kick it down you can shoot it to kill some demons, for the Challenge. Descend the stairs and quickly look back to shoot 2 Lost Souls. A Mancubus appears at the top of the stairs: he's a good one to use for the Pin Pops a Balloon Challenge. If you climb the stairs, 2 more Lost Souls appear.

Mission 11: Treats

A CODEX ENTRY "Artifacts / Slayer's Testament #6", Gas, and ARGENT CELL 11.1 (the last) are found by continuing down the corridor.

Mission 11: Fight: Traps

Go back up the stairs to where a gate has opened: you should see a Skull Switch straight ahead in the next room, but as you approach it, a bunch of Unwilling and a Spectre spawn. Kill them and actuate the switch, causing 2 Hell Knights to spawn as you return. Go back down the stairs and kill a Cyber-Mancubus. CHECKPOINT.

Mission 11: Fight: Square Arena

This is a square torchlit bloody room w