Disclosure: This game copy was bought by the reviewer.
I hate to advise against purchasing the game right now, but some of the platforming areas cannot be reached due to bugs involving the boxes in the game. The combat is simplistic with just a standard sword combo and a strong combo (plus shooting with both gun slots), but it is engaging enough with a silly story (with some localization issues). Upgrades are standard stats or passive ability upgrades while the weapons can be slotted with some unique bonuses to loot drop rates or preventing stagger. AI does have some engagement issues, leading mutants to just wander into the sides or pump against obstacles. Ranged opponents don't seem to have that much of an issue, so it could be tied to path coding. I haven't encountered a game breaking bug yet, but as I said at the beginning, some paths are inaccessible and prevent the acquisition of souvenirs or survivors (both adding stat bonuses and completion total).
2