A fun little game: not a lot of expectations and you'll get a decent story
The graphics are high end with an interactable environment requiring you to move stuff, search through boxes for goodies, build bridges etc. Plus the ending is good.
My only beefs lie with the AI that never assaulted, and went through cycles of protective cover so you only need to wait and the next head would pop up in the EXACT same spot as the last head you just sniped. My other beef was with the edge detection when jumping. If you were against a step and jumped, you'd find yourself flying backwards instead of either up or up and forwards. Frustrating when in combat and running out of oxygen.
The terrain varied from tight corridors to larger rooms to wide open vistas although with the placement of the enemy you could go a long way to find anybody only to run into a choke point filled with them putting you into a murderous crossfire. Even the hubbardium slowed time didn;t work here. Which gets me to the next point: the slow time only seems to work when they haven;t seen you beforehand. If they have seen you and you trigger it, they will still track you easily filling you full of shot (and those shotguns are powerful). But learn all these set-ups and yo'll fnd the game more engaging than frustrating.