I thought this was great! It was a nice quick little playthrough. I personally thought the controls were perfect. There wasn't too much sliding that made me complain about it. There's more slide in big time games like Mario and Sonic. The added double jump made it forgiving. I also thought the graphics were well done. Not AMAZING, but very good. You could maybe add more polish and different animations.

Some small things that you could probably fix:
1. After level 1, I was collecting more starts than you said were in the level (In Level 6 I FOUND: 37 but IN LEVEL: 30, etc.)
2. Also, that boss would NOT have been beatable if he didn't keep his damage after dying. I would either make the boss a little easier when he's near death, or make some way to shield yourself. It's nice that I was able to win with the checkpoint right there. Just made it feel like a cheap win ya know?

Either way, I had fun playing. Thanks for making it!

The art's good, but maybe add the up arrow as a jump key, and make you able to jump higher?

The artwork is pristine and the music is good. I think that the only problem is that the floors a BIT slippery...

The movement is horrible. The gravity is that of Jupiter, the double-jump is temperamental at best. After several tries, I managed to pass the level but the map does nothing. Should have programmed an end screen or at least a tootip.

looks very nice tho very hard tbh. i very often slip off the platforms. maybe i am just a noob haha

great job!