Aliens: Colonial Marines has just received one of the biggest day-one patches that we’ve ever seen, and it was sorely needed. The game had some pretty major bugs.
- General user interface improvements.
- Various performance improvements.
- Fixed issue where a door may not function properly if a Xeno was killed while opening it.
- Addressed issue where players could become stuck in a close encounter after killing a Lurker that had pounced them.
- Fixed collision issue where bullets would not pass through certain open doorways.
- Fixed an issue related to clients incorrectly interrupting Xeno melee encounters.
- Addressed an issue where doors would sometimes not open properly.
- Addressed an exploit where players could melee while throwing a grenade or placing a claymore.
- Fixed some collision detection issues that could result from a close encounter.
- Prevented campaign pop-ups from appearing outside of campaign.
- Fixed an issue that could prevent NPCs from getting on the elevator in the Sulaco.
- NPCs no longer attempt to open doors while being welded.
- Fixed issue where Raven could sometimes pass through welded door.
- Implementing a message to warn players that campaign progress will be overwritten if they try to start an offline campaign game from within the co-op campaign UI.
- Adjusted the distance between players before they're warped to the location of furthest player in co-op.
- Fixed issue where torch would sometimes appear incorrectly to co-op clients.
- Fixed issue where difficulty could sometimes become stuck incorrectly after switching modes.
- Fixed issue where co-op player would not recover properly after being saved from a close encounter.
- Fixed issue where Russian players could not drop into a co-op match in some missions.
- Updated late-game close encounter moment to disable player input, which could cause them to become stuck.
- Resolved issue where campaign Motion Tracker could incorrectly in multiplayer loadouts.
- Fixed issue where clients would sometimes be invisible after spawning in No Hope in Hadleys.
- Multiplayer teams are now randomized (parties excluded) if percentage difference in scores is greater than 15%
- 'Switch Teams' option removed from the Pause menu.
- Corrected issue where server and client could get out-of-sync when switching out of a power-up while firing.
- Fixed issue where controller would vibrate during the scores screen if Rage ability was active upon match end.
- Fixed issue where Cloak ability would not conceal the Lurker when walking or jogging.
- Corrected bug where clients appeared to spawn outside of world before match start.
- Removed placeholder text from appearing on scoreboard in certain situations.
- Improved camera transition when Xeno enters a vent.
- Fixed issue where Xenomorph HUD could sometimes appear in the wrong color.
- Fixed issue with Spitter acid sometimes preventing players from deploying a Sentry Turret for a short while.
- Spitter's "Acid Spray" now originates from the mouth.
- Escape: Fixed issue where Xenos could spawn in unplayable space.
- Escape: Fixed issue where Xeno players could lose functionality if warped to next area while in a vent.
- Escape: Addressed issues where players would spawn with no weapon if they were the last Marine to die in Escape.
- Escape: Fixed issue where Cat-Like Reflexes ability would not properly complete in an Escape match.
- Escape: Improved timing and placement of warp locations in Emergency Evac map.
Source: Gearbox Support