Well, off the top of my head:
Marines now have working recoil
Marines now have access to working armor (heavy, light and acid resistance) in all modes
Marines now deal slightly more damage
Some gun sound changes (e.g. faster ROF pulse rifle)
Improved for all modes, especially the Xenomorphs.
NPC Xenomorphs are now much faster and do not have crippling pauses between their attacks.
Annoying close encounters disabled.
AI Lurker will instantly kill you if you get pounced (cannot kick it off). Incapacitates if in a CO-OP game.
Not sure if we’re going to look into it again, but we’re trying to improve the rule engine for the Xenos to make them more smarter.
Marine AI got a slight damage boost to offset their stupidity (O’Neil…).
In Bug Hunt, Weyland-Yutani PMCs now engage Xenos instead of going solely for the players. We also fixed the RPG, and change some of their loadouts.
Speaking of WY, our edited maps will reduce their amount and make it more Xeno focused. This is for Bug Hunt only.
We rebalanced majority of unlocks. For instance, Xeno rupture or Xeno rage are no longer the “I win because I died” buttons. Survival and Escape modes should be playable now. A lot of underused attacks got buffed, and overpowered got nerfed.
Marine armors are now fixed and provide actual resistances.
I’m sure there’s more but I can’t think of any right now.