The game pretends to be a boomer-shooter, but in fact it’s much closer to a trick-shooter such as Bulletstorm.
You start with a 10 seconds timer, and you die if the time expires. The way to extend it is by killing enemies, the more inventively you do that, the more extra seconds you get.
There are some clever references to movies and anime from the late 80’s and 90’s: Akira, Bubblegum Crysis, Terminator, to name just a few.
But the overall gameplay feels very chaotic. Even though there’s “easy mode” without a timer, it’s not very good. Levels aren’t even levels, just corridors, and you get just a single gun with infinite ammo, which you can trade or upgrade between floors.