Pretty neat, i like the sorta speedrun vibe you get from the game since you have to not only beat the level but beat it on time, i like the puzzle element in it with the alternate routes, keys to pick up to unlock some routes etc...
Sadly i didn't go very far, i got stuck on the 2nd level with the baby, cause i couldnt figure out where i could pass when reaching the spiky blocks near the end, and i can't seem to grab the second key without being stuck, spikes block the way and i can't jump high enough to go back up :(
Other than that the game feels solid, especially if it's a first.
So i'd say level design aside you did good :)