Aliens: Dark Descent

• If you are in a Hunt you can weld the doors of a room you're in and cancel the hunt, even if you don't rest. It applies to even non-"safe room" areas, but it doesn't work if enemies are already moving towards you.

• Taking out roaming xenos is a big part of stealth later in the game and it's easiest to do this with either mines or the sniper's silenced special shot. For mines you can use the hacker's drone or an auto sensor to lure enemies into them. You get a lot of command points to spend, and they regenerate, so don't be afraid to use them.

• If you are going to spend any time in an area then slapping down some sentry guns takes seconds. Just don't forget to pick them back up again.

• Save your purchasable skill slots for after you get a class specicialization because you will end up being able to buy some good class-only upgrades.

• You unlock the ability to passively train rookies later on, as well as a way to get rid of stress based debuffs, so don't worry too much about save scumming if you get in trouble or grinding out xp on green recruits.

• The Armored troop carrier does not trigger hunts and also rips enemies to shreds so don't be afraid to lure baddies into it. You can even use the map to drive the vehicle up and down roads to clear them out. It's fairly broken in some maps.