Chapter 1 - Submarine Stealth | Ada's campaign Resident Evil 6 Guide
Last update: 11 May 2016
After beginning of the level move forwards until you encounter first enemy.
Approach him slowly and press RT when indicated on the screen. You'll perform quiet kill in this way. From now on try to kill all enemies with quiet kill or a crossbow, because if you get noticed, the alarm will be triggered and large group of mutants will come running.
Head to the room on the right and crawl through the low corridor to the other side.
Behind the corner another mutant awaits you. In order to kill him silently hold the LT at the end of the wall and press RT when the creature comes close enough (the instruction will be shown on the screen).
Next to the laser barrier, turn left. In the small room you'll find another tunnel.
On the other side silently kill another opponent and then very slowly lean out to the corridor. You have to do it when J'avo turns around. Kill him with crossbow then.
A bit further you'll encounter another barrier. When the enemy disappears behind it, turn right and use the crossbow to kill the enemy in the room.
Enter the narrow tunnel and go to the other side. Exit the tunnel only when you do not hear breathing of mutated creature. Then quickly hide behind the crate behind your back and eliminate J'avo.
A further way leads to the deep hole. Jump down and then use the zipline to get to the upper floor.
Behind the corner another enemy awaits you. Kill him with the crossbow.
The next enemy stands around the second corner. Wait until his shadow disappears and hide behind the corner. You'll be able to quietly kill him from there.
A bit further you'll see gas tanks, which can be moved. Do it and enter the tunnel you've just discovered.
Once you get to the other side, go to the left until you find an alarm switch. Run in the indicated direction, killing silently enemies on your way.
In this way you'll reach another hole and a tunnel, which will lead you to the locked apartment.