The art for this game is BOMB AS HECK I love the lil character guy and his gun is very snappy & responsive, it's fun how you can shoot it in a full arc instead of just to the left or right. The background is completely beautiful and creates a great atmosphere :D It's challenging and I personally appreciate that a lot in a game, don't want to just roll through something too easily after all; I had to learn to be predictive with the speed of gunfire vs the enemies. Pushing the blocks around for a jumping off point was a cool mechanic.
some bugs I think I found: I got killed by the first big jellyfish boss guy and when I hit "try again" and went through the level again, the boss did not spawn after the little jellyfishes came down to attack me; after a few restarts I deduced that the reason was that I, being the wily player I am, kept skipping the first sluggy guy after my first playthrough afterI realized you could hop onto the block above it, and it *seems* that failing to defeat all previous monsters in the level prevents the boss from spawning - but also, once you are in the boss area you aren't allowed to go back and shoot any enemies you missed, so you have to start all over. Also, I wish I could give more thorough feedback about this, but I wasn't able to pinpoint exactly when it was happening D:, but double jump seemed to not trigger for me sometimes, very random when it wouldn't but I wonder if it could have something to do with the way I constantly press A or D while I am also trying to double jump. I dunno! At first I thought I might be trying to trigger it too fast, but I noticed some fails even when I gave it time to cool down.
anyway GREAT JOB on the game, you made a really cool thing here !