Part 15

After clearing out PMCs, enter the rebel's safe house in the northeast corner.

Switch your Solid Eye (a device providing tactical information on your HUD (heads-up display — the on-screen icons showing health, ammo and the minimap)) to night vision mode due to the darkness.

If you helped the rebels previously, you can freely explore and collect weapons and items.

If the troops still consider you an enemy, proceed cautiously, using the Solid Eye to peek around corners. You can return to the Red Zone to help them if needed.

Alternatively, to avoid killing all PMCs, eliminate a few to gain ally status, then offer a ration or other health item when stopped by rebels to win them over.

Near the end, find wounded and dead soldiers with ammo, and collect the "Theme of Tara" song for your iPod.

Continue past scientists examining a mechanical wing to find rooms with RPG rounds and other items.

In one of these rooms, find the Middle East militia costume in a locker against the wall.

Head upstairs to the city, entering the Urban Ruins area.

A cinematic introduces Drebin, an arms dealer who sells weapons to rebels. He offers Snake a barter system using Drebin Points (DP).

When Snake picks up a weapon he already owns, the MK.II (a small drone) delivers it to Drebin, earning DP.

Collect enough DP to unlock weapons, purchase new ones, and buy ammo and modifications from Drebin.

Drebin offers a twenty percent discount on Sundays and Wednesdays.

Drebin gives you the M4 Custom machine gun for free.

Turn around and pick up RPG ammo at the end of the alley behind you.

Head south and collect the rest of the ammo.

Run up two flights of stairs, drop to the west ledge, and find another RPG and a Dot Sight in the rubble between buildings.

Sell the Dot Sight to Drebin or use it on a weapon.

Enter through the crack in the wall and crawl under the destroyed floor.

Use the Solid Eye's night vision to follow footsteps if you are lost.

At the north end, watch two soldiers get killed and collect ammo.

Follow the path east until the floor above collapses, allowing access to a new area.

To reach the checkpoint (an auto-save point you restart from on death), lean against the wall, shimmy across a narrow ledge, and slide down to the lower level to the west.

Follow this area to the end and find stairs across from you.

Turn around, pick up an iPod song under the broken floor, and jump down to the stairs.

Enter the Downtown area.

Use the tattered oil drum by holding X to tip it over and roll inside, but avoid rolling for too long as Snake can get sick.

Check the ruins behind you for a ration.

Follow the street west to a back street entrance.

If you helped rebels in the Red Zone, they won't bother you here.

Near a block down, rebels are fighting a sniper; find another route by hugging the south wall and entering a narrow alleyway.

Wedge through a small gap between buildings.

Continue on the other side, then go in the opposite direction of soldiers preparing for battle until you reach a split.

Both paths lead back to the main street; take the path behind the tank to avoid danger.

Sneak behind the Stryker and cross the street to the south side.

Enter the next alley near the van and crawl beneath the building to find stun grenades.

Return to the main street where rebels are in a heavy gunfight with PMCs using tanks, snipers, and aircraft.

Lie prone and crawl along the left side of the street towards the checkpoint to avoid fighting.