it was funny but repetitive and after the first level monotone. i liked the music and the effects but you should make it less repetitive,placing some stairs in certain places helps make it easyer to the player to keep interested on the game and a time between each laser would make it more challenging (just half a second or less)so the game becomes more moving and not just clicking as fast as you can and you force the player to use the charged laser more often to survive
3 stars because you can improve it a lot
sorry if my english is bad, its my second language