I thought it was fine i see what you were going for and its pretty cool, it took me a sec to figure it out but it was intuitive witch is something most games cant say.
The only big things that took away from my experience was music, level design and feed back.
The level design suffered from making the player fall strait in to spikes sometimes. I would come over to a ledge and jump down it and fall right on top of some spikes and die, it made it more difficult sure but not in a good way. Another thing you could have done to make the level better is make the parts of the level where you are slower easy when you are slow and make the parts of the level where you are fast easy when fast. because at the start in order for it to be even possible for me to get past it with out loosing a life i need to wait and that got boring when i did it 4 times already, so just make the level flow better basically.
Second give me better feed back like when i hit a spike make a tick sound and throw me back flashing white or something. Something to tell me "YOU GOT HIT!" that's all.
The other thing is music it should have been longer for one and for two this is something i see in so many games and that is they dont make the music persistent it didn't effect this to much cuz there aren't a lot of screens there is only one but by persistent i mean keep the music going even after i die or got to the next level or go to the start screen don't restart the music keep it going.
And finally... it was good i get what you were going for and its a nice idea the nice and short and when i got to the bomb it made a lot more sense, keep making games i know you will make a way better one next game jam and thanks for putting all of that hard work i know how hard game jams can be you just get better the more you do, so nice job! thumbs up.