Soulworker

"Soulworker is a post-apocalyptic, cel-shaded, massively multiplayer online role-playing game with both single-player and cooperative play options. Experience intense combat with rapid combos and six unique characters, each with their own backstory and weapon, ranging from a sword to a guitar. Engage in PvE battles against demons in quick dungeons or test your skills in PvP mode against other players."