The idea of making a game about monkeys is literally the most unique one I've seen :D And the gameplay is hella fun as well. The music and art is also very good. One thing I would recommend adding is some kind of kill countdown before boss or some kind of indication that you are in level 1 2 3 because some people may thought that the game is endless shooter if they die in the first level :V (yes some people don't read text outside the game)