Just a few notes. 

• I'm guessing this is just you running out of time, but the theme-related part of the game kicks in a bit too late, even if I do appreciate introducing mechanics one a time otherwise.
•  The fact that the astronaut continues nonchalantly walking in place after getting spiked is a bit jarring, though I'll give you credit for making only the pointy bit of your spikes deadly.
• Did the pushable objects benefit from being able to rotate? At one point the big barrel spun around with me on top of it and did its best to pile-drive me through the floor.
• I'm not sure if the rewind mechanic always rewinding the full three seconds was an intentional limitation? If not, it might have been worth considering a second press of the button cancelling the rest of the rewind.

I definitely wouldn't mind playing more of this, were there more of this to play :]

As others have said, the gradual ramp-up of mechanics was definitely appreciated, and if you want to keep adding content you have a number of players who would be interested in trying more, myself included.  Good work!

very cool, liked the rewind implementation

Very nice game. I like the slow progress in adding only 1 mechanic at the time. The mirror and rewind mechanic was the best. Just wish after learning all the mechanics to have 2-3 hard levels which require combining them. Well done on this entry!

Nice steady progression of mechanics, and I liked the use of your own corpses to solve puzzles. Music was nice too, found myself jamming to it.

Good job - you managed to put all wildcards in there and a lot of game mechanics. I love that you managed to put a tutorial in the game. I guess there was no time left to create any further levels which is sad, because I would love to play some more. 

Interesting take on the wildcards! I especially like how “why limit yourself?” and the theme is basically one and the same mechanic. This lends itself well to something that could be expanded upon and turn into a really cool fully-fletched platformer!

Nice. Showcased great mechanics with theme and wild cards. You could make entire games of several of these. I really like how you snuck the MEMENTO MORI one on me. I also really like the rewind one and I'm trying to figure out a game know based on that. Good Job!

Nice vibe and music! And the game controls are very pleasant to play with! I can easily see it becoming a great platformer with enough complex and interesting levels!