12. Never Bringing An Air Can And Always Needing One
"I don't need an air can." At least, that's what you tell yourself. With inventory management being a hellish balancing act between health, ammo and other loot, there's no room for a contingency can of O2. After all, there are oxygen stations scattered around the ship, so as long you move quickly enough, there shouldn't be a problem. Unfortunately, when you're just not fast enough, you'll find yourself gasping your final breath five feet in front of the door, wishing you brought one less small med pack and one more can of air.