On the positive side: It's not Painkiller: Ressurection. This is to say it's a stable game that will launch, run, load, and not crash every ten minutes.
On the negative side: everything else. It's the ultimate in shooting the same damn enemy over and over and over again in a small featureless square room simulator.
There's almost nothing to do here. No atmosphere, no new weapons, no new enemies, no new maps (they're all just multiplayer maps very, VERY poorly turned into single player maps). What little story there ever was in the painkiller series is gone. There's no voice acting to speak of. The uber obnoxious "HUH" noise the character makes when he jumps has been mysteriously re-added, for some reason, which was the sole saving grace of Redemption that they took that out.
There's nobody playing on the multiplayer servers. The tarot cards are all so impossibly hard to get that I can assure you with 99 percent confidence you'll never see a single one except the first one. Play the game on insomniac difficulty and you'll be dead three rooms in, play it on Slumber or Daydream and you can't get souls or cards, taking essentially the only reason to play the game away from the game.
Each level is the same: Spawn in a room, literally hundreds of enemies spawn with the developer having payed no mind as to the location or quantity or even model of the spawning enemies. they just CTRL+V'd the entire game. Enemies spawn on top of each other, enemies spawn on top of you, right next to you, etc. Then you shoot them. Then you go to the next room after living through ten or so waves of enemies.
Yes, ten waves of enemies per room. There's no alternative rooms, no exploration, the secrets are all just ♥♥♥♥ easy to find because the game is soley multiplayer maps. There's nothing here. It's five dollars you would be better off buying almost anything else with.
I'd almost recommend it just to see how lazy a game can get. That said, Recurring Evil exists sooooo yeah.