343 Guilty Spark - For collectibles here we have the Recession skull (5:51) and Terminal 6 (06:13). For Recession, when facing the entrance to the building early on in the level, look up the hill to your left for a turret. Behind this turret at the base of the hill on the other side from where you are, the skull sits beside a tree. For the terminal you have to jump off of the final elevator that you go up to get out of the building near the end of the level. When you activate the elevator, immediately look to the nearby doorway ledge and jump onto it where you see the glowing terminal before the elevator takes you to high, or you may have to restart the level.