This game is fun, but easy. Just build a fortress of walls, then break one of the walls to make an entrance, choose your gun and start killing. You can't fail. Sorry can't give this a 5 coz of this but it deserves a 4/5
Fix the glitches and try to improve the graphics a bit. I'm not saying your drawing skills are bad, but it doesn't look that good. 4/5 I'll give you a 5 if you improve it.
getting the imp. badge is all about luck, you gotta hope you don't face an impossible floor. also it's extremely frustrating and addicting as well, frustration + addiction isn't a good mix. 1/5 remove this game or leave a warning sign (WARNING: This game is really hard and frustrating and addicting, don't play it if you can't handle that)