I loved this :) It was so fun to play, not too much to think about, so quite relaxing but in no way boring. I like that when you hit an enemy you flash and you can't be hit again straight away. As I said last night in the chat, I love your sprites, they look really good. :)

Awesome game man, keep up the good work!

It was awesome! I like the mechanics of the game a lot: Killing enemies turns them into balls of death that can kill other enemies, lol. The boss battle did seem kind of long. But the fact that there are boss battles is awesome!

I just wish I could use WASD; my laptop directional keys sometimes don't work, so it gets a tad annoying. Other than that, awesome game man!

I thought this game was awesome! The graphics were creative and the gameplay I thought was smooth. But I would agree with some of the other guys about boss battles being a bit long. You should either have the boss go into a second method of attack, or take three hits instead of 6. The game goes into a harder curve towards the middle, but a lot of games do that and should do that with 2d platformers. But some of the later levels do get a bit frustrating at times but it isnt impossible to get through. The idea of a rocket launcher to skip levels was a great idea considering there isnt a way to save your game. It would have been cool to add some bonus where the player can find a hidden treasure in every level just to add something for the player to do. The only thing I can really say to change is find some original music for the game someway, tho the music that was used fit great, unfortunately the soundtrack wasn't original. Otherwise this was a very nice project! 5/5 for me!

I really like this. The graphic style's very nice, it plays smoothly (very rare in Game Maker platformers), and the concepts for the boxes and enemy behaviours were well varied, which is good. The whole thing sort of gave me nostalgia. The rocket launcher was a great idea as well.
My only issues are that the music gets a little repetitive, and like Alex Ford said, the bosses could be a little shorter or more changeable. Also the screen tears a little sometimes.
Really awesome overall, though.

Nice platformer it was fun to play and the gameplay was pretty decent, but first level does seen to be a little hard especially if you haven't played it before. well done 3/5

A decent game, I'll categorize:

The Good:

The Art, it was awesome and fit very well with the levels
The level design, it complemented the enemies and the boxes
The Rocket Launcher, having level skips was a great idea

The Bad:

The difficulty curve, I got to level 11 and got stuck, it gets really hard!
The bosses are a little dull, my hard-n-fast rule is if it doesn't die or change state in three hits, its's too long

4/5 really good game!