The aesthetics of the game are extremely cool and fun. It's also helpful gameplay wise because it helps me know where I've already been based on the splattered paint. The fact you created all the art in 48hrs is seriously impressive and commendable.
My biggest gripe with the game is that you can shoot through walls which can make it very unfair to the player trying to hug the walls. Also, I'm not sure if this was intentional, but the last level felt IMPOSSIBLE to do without shooting basically everyone I came across. Other than that, I had a ton of fun and it fits the theme amazingly.