Nice one! Wish there was more! I was just getting into it!
Things I particularly liked:
>The concept: Very cool concept to selectively rewind objects; I wish there were a few more levels to try out the mechanics in more creative ways :)
>Fit the theme perfectly :)
>Graphics and sound effects fit nicely with the game :)
Things to improve upon:
>More levels :) Haha, this is a good thing if I'm wanting more :P But yeah, it felt like I'd just gotten through the tutorial when the game ended; left me keen for more ;)
>Aiming: I think it might be easier if you made aiming done with a mouse (or analog stick for controller). I also found a very minor bug (on the second level) where it wasn't letting me aim up-left or down-left; it wasn't necessary for that level, but just FYI.
>Try to make it so levels can always be completed without restarting the level. E.g. in the second level I immediately went and pulled the lever to see what it would do. I then threw the knife at the box and tried rewinding it and it did nothing. So I got confused and tried pulling the lever again to bring the box up again but it didn't move. I then looked at the hint and restarted the level; but I think it would have been better if I could have completed the level without restarting (i.e. if i could have pulled the lever to bring the box back up to where it started then i wouldn't have needed to restart).
>Maybe keep the controls listed in the UI somewhere so i could easily remember that Q = throw, R = rewind, T = super rewind, N = restart level, H = hint etc. only a minor thing, but would help, especially if you end up introducing more actions to it.
Overall I really liked it! Just wish there was more :) again, that's a good thing :)