You can tell a lot about a game by the guns it has on offer. If I tell you that Painkiller lets you blast zombies with a stake gun, which also doubles up as a grenade launcher, the mental image you're already forming of the FPS will be mostly on-point.
Painkiller is a co-op shooter in a similar vein to Warhammer 40,000: Darktide, where you depart on single-instance missions to earn currency, which is then spent on your guns, upgrades, and stat modifiers back at your base. It's a genre where the bar for sensibilities is low. You turn up to have fun with pals, whether you're laughing with the game or at it. Combining that with a Doom-style setting where you suspend your disbelief to feel oh-so cool should be a winning formula. But it's a little more nuanced than that.
