Hey, very impressive work in terms of the look and feel of the game (amazing graphics, audio and fun dialogue...sort of haha...)!
Things i loved:
>Visuals: really beautiful! A good blend of the cardboard-cutout style of yoshi's story/paper mario and the 3D Toy-Story style feel; i really enjoyed it! I liked the backlit lighting and post-processing effects too, very impressive!
>Sound: I loved the cute background music, nice touch with the whistling :) I liked the fact that there was quite a few lines of dialogue, that felt like the reward for progressing further.
Things to improve on for next time:
>I think your game loop/idea could have been refined a bit more before starting development i.e. spending a bit more time figuring out where the fun/entertainment would come from for the player, and what the main challenge should be. I felt like the enjoyment came from the stuff surrounding the game (i.e. the visual, audio and story) rather than the game mechanics itself (while that's not necessarily bad, it means it's perhaps better suited to an animation/short film/picture book than a game). If you wanted the enjoyment to come primarily from those aspects then perhaps make the gameplay simpler/more automated (i.e. make it more like an interactive story, rather than actually challenging the player to time their jumps etc.). If you wanted the enjoyment to come primarily from the gameplay then I think more planning up front on what mechanics you will give the player, what challenges will utilise those mechanics and what makes those challenges fun/enjoyable (i.e. does the 'you only move once youve rewound' mechanic make the game more or less fun than if it didnt exist? and if less fun, then how could you change that mechanic to make it more fun?). Clarity up front before you start writing the first line of code or drawing the first picture will probably help you achieve something even better next time :)
>User Interface: It's a fairly simple game, so doesn't need much of a UI, however it is important to know how much the rewind is actually charging the robot. Once I figured out that a full charge was ~5seconds i was able to count out loud to figure out when it would run out, but it would have been nice to just see something running out visually.
>Give the player more control over their fate and be more lenient on mistakes: Even after I figured out the timing, it only helped a little, because if my robot was in a spot where it couldnt jump high enough for the next obstacle without getting turned around, or was facing the wrong way already, then it didn't matter about the timing, I was doomed to fail anyway. I think you should have made it so the player could at least turn around without bumping a wall; that way they didn't need to backtrack long distances to the next wall. I also think you should have allowed the player to apply some brakes, or start rewinding again before the rewind was used up, since there were times where I knew I wouldn't make the jump over a gap but I had no option but to watch my robot run out of wind mid-jump and fall, losing lots of progress, and causing frustration.
>Cruel dialogue: haha, so this is the 'sort of' that i mentioned in my first line of this review. There was a point where I fell really far, undoing a lot of progress I had just done, and the game's dialogue was something like 'running out of battery was annoying', or 'falling was annoying' or something like, and I thought 'YES! IT IS! WHY ARE YOU DOING THIS TO ME!?' hahaha. This is a super minor thing, it wouldn't have been an issue at all if the above things were tweaked a bit.
>I ended up finding a bug where I got frozen against a wall :(
Overall:
Very cool theme idea! Great execution from an aesthetics point of view; less ideal execution from a gameplay-idea/gameplay-mechanics point of view. I hope this long review doesn't seem overly negative, I'm just trying to give you as much feedback as possible for what to work on next time :)