It's a cover based TPS that handles very similarly to Gears (you snap into cover the same way, hold a button to sprint with minimal steering, health regen etc.) You get a boomerang that can oneshot most enemies with a headshot. Enemies are split between mutants with melee weapons that are easy as shit, STALKERs with guns that don't scream cheeki breeki and mutants that fire bullet things out of their hands. Boomerang can be thrown at fires and electricity and shit to imbue it, making it kill shit faster and solve some puzzles.
STALKERs die from pretty much everything and have some really gruesome sounding death screams if you boomerang limbs off. Mutants are massive damage sponges against guns so you pretty much have to headshot boomerang every single last one to death. You get a couple generic powers (cloak, bullet shield) that really aren't very useful. Obligatory mech rampage segment near the end.
Storyline is nonexistant. Protagonist is an edgy fuck with a shitty haircut that you have to stare at until you get a cool ass helmet around 75% through the game. The first boss in the game is a massive damage sponge - you might think you are not hurting him, but you are.
4/10 at best but if you are bored as hell it might be fun to dick around with.