All this talk about acid made me want to make an acid game, but one thing led to another, and... well I ended up with this:
It shoots more than just acid, it shoots all sorts of things, Lava, Liquid Nitrogen, Razor sharp ice shards, its a flamethrower, it blows people away, and can pull them in, and a shot of compressed air can send most projectiles back to their owners.
All it takes is a pull of that lever and the whole back plate pulls back, allowing the rotation of the canisters, then your good to go.
