Good game nice work! I like the tone and the mood that was set with the music and aesthetics. The RMB ability was a cool take on the time element, being able to suspend enemies and fire a wave into the frozen zone was a cool effect.
I didn't really use the rewind that much at all, i couldn't really see a reason too. Perhaps it was because there was so many health drops that even if I missed one I could just kill something else and probably get one. Maybe think about reducing the drops to encourage more time bending?
Really good submission though!