Geez, this game's bad. Amazing how Raven Software can come up with something that looks like it was made by a 3rd tier Korean dev team. Weapons are unbalanced; aside from a few instances all you'll need are the minigun and the sniper rifle (which out of the box can kill 5 different opponents with one time-dilation). The roly-poly gun looks cute, but worthless when not upgraded. Character design is derivative; the monsters are forgettable, and the girl NPC is like Alyx Vance with retardation. Time travel mechanic is simple, but doesn't feel like anything changes. Poor level design, one can get easily lost; the rooms don't flow naturally towards your objective. The so-called plot twist is ridiculous and telegraphed.
On the plus side, the weapon locker and upgrade menus look very nice.
On the plus side, the weapon locker and upgrade menus look very nice.