Incredibly fun game that encourages speedrunning, the level design for the most part is superb with a lot of options to finish the levels as fast as possible, the story is alright I wouldn't recommend play it for the story only but its there and it is pretty funny ocasionally
It's probably due to me not playing much but every run felt pretty much the same, the same 3-4 guns 2 melee weapons and constantly the same few upgrades so I just gave up