Firefight

Also, I don't want to use sentries until I have everything maxed because their kills don't give me exp. Why don't I get exp from sentry kills?

You should make some kind of checkpoints or a portino of xp gained so you could for example gain ranks (private, corporal, etc.) and based on that start with extra xp to boy stuff from the beginning.

The mechanical aspects of the game are great. The gameplay, however, are flat. Once you unlock a few things, you don't get anything new... no new levels, no new modes, no new challenges. It just gets harder in a steady grind.

Despite decent graphics, pretty interface and some innovative features, this game is very unpolished: no performance or sound settings accessible while playing; weapon upgrades don't change much; you spend most of the time hunting your foes instead of trying to survive their attacks; the arrows pointing dropped items and supplies don’t always work; the game is run at a resolution discouraging to play - it should be as square as possible, allowing you to defend yourself from enemy attacks from all sides at the same chance, with your sight as far as possible in all directions - and for the same reason the camera should be zoomed out more; the pop-up messages cover your view furthermore, disabling you from dodging properly; and, finally, the 'standard' gameplay gets boring after a while - you don't ever get to effectively kick ass all over the map, nor are you ever met with a challenging enemy – you just strafe and empty half or more of your clip on a single target at all times.

really clunky, also need a clearer indication of where the cliff is, because it looks like its just part of the terrain