Mullet Mad Jack is kind of incredible. What's Mullet Mad Jack?
Mullet Mad Jack is a hyperstylish FPS where the premise is you're what's known as a "Moderator". It's 1980's cyberpunk anime future but the world has been taken over by livestreaming. HQ contacts you to rescue a hostage ("our princess") and automatically begins streaming your attempt. You have to keep your audience entertained by getting a kill every 15 seconds or else viewers abandon your stream, and if nobody's watching your stream you fucking die
What follows is kind of an endless runner for shooters? Very small rooms, very tight corridors, only one or two enemies per room, but it's ultra fast paced and levels are usually under a minute long because you gotta keep moving and can't stop for anything. Controls are super simple: left clicking shoots, right clicking does a dash that turns into a melee kick when you get close to an enemy. Enemies can be kicked into things for bonuses
After finishing a level you get to choose a new perk (automatic reload for dashing, ricocheting bullets, extra time for specific kills, etc. there's tons) or swap your weapon for something else (shotgun, SMG, katana, pistol)