Ok in the most recent build as of this posting i see a few things that stand out right when starting. These are not in order of priority.
1) Playing the assassin is fun but the Sniper Rifle is no good the way it is. At least with the #1 ability it should be able to snipe but the range on it is way to short. Whole point of being a sniper is you can shoot from a extreme range and don't get seen. Or don't take any return fire. Right now it's range is not much more than a regular rifle. Shooting at things i can see clear as day i should be able to hit with it. Not wait for it to get in its own firing range so you can hit it.
2) When you get locked in rooms and gassed or other. The shut doors often close on you making it so when you shoot the bullets go on the other side of the door and does not hit it.
3) Summoned creatures: like those that come from portals and flag bearers should not roam to far away from their masters. 1 or 2 rooms but not the whole map.
4)Optimization is not quite there yet all be it still alpha. But my GTX970 runs full bore when i am on the command bridge of my ship. and this is even more than when i am actually playing the game level. Hopefully this will be resolved. When on ship the usage should be minor compared to when playing the actual game level.
5) Last but not least for now is he color of the Purple items i do not have the best eyes and i can barely see difference between the Master-crafted and the Artifact tier. Making the background so it has more pigment in it or even adding a icon in the corner to denote this item is master crafted vs this on is rare and this one is Artifact ect.