Gameplay and audio.
First of all, this is a sneaker wannabe. Nothing wrong with that except, I was looking at the EVS (radar/map thingy) 99% of the time. Is this suppose to be fun? Sure as hell wasn't for me! Sentries are alerted when you either enter the hearing radius as indicated on the radar screen, or when their line of sight is upon you, distance also indicated on the radar screen.
Secondly, the voices within the game were pretty awful. One voice actor was probably used for 80% of the game voice, and he ain't so good at masking that fact. The dialogue is even worse. The music was irritating. The sound levels were crap - meaning it's hard to hear footsteps when the surrounding environment is deafeningly loud, not to mention freakin' irritating.
Character control is also flawed/irritating. Kate Hawk is just too damn sluggish. Whether it's using ladders, switching weapons, running or strafing. When you're using s...