I am not sure if it is just a skill issue of mine but I think some audio queues or a better visual queue would help a lot! I also managed to beat the 2nd level (mountain guy) by just spamming space + left click, oops... Not sure if this was intentional..
That being said, the game is very polished and the art and audio are very good! The countdown mechanic is awesome too and I can totally see this being a real game! Great job!!