Extremely fun level, the ending wave is some of the best wave gameplay I've ever played! =]
The level is pretty obviously not meant to be balanced, but I think that works in its favor since the wave is a lot easier to do when you're focusing, which surprisingly makes it a lot easier from 0.
As for the deco, it definitely isn't gonna be everyone's cup of tea, but I personally like it a lot for its buildup and intensity!
Difficulty In-game: Extreme Demon
Personal Difficulty: Extreme Demon
Worst Fail: 80
Song: twenty one pilots - Goner (Instrumental)
Enjoyment: 10/10
Recommended: Yes!