Solid Game
Pros:
-Games art style is very reformed, everything look like it belongs.
-Simple controls, Good to have, keeping it simple is better for more inexperienced players
-Progression is good to see near the end. To be able to return to the other levels.
-Quick game play, nice and quick to get into and to play. finished the game in a few minutes and am feeling satisfied with finishing it.
-Good music! It may only be 1 song but it fits well. I hope your composer is happy with it.
-A VOLUME SLIDER WOO! This is always nice to have plus the menus way of depicting the slider graphically is fantastic.
Cons:
-When the text pops up it stops you moving, this halts game play, perhaps maybe allow the player to walk around slowly while its up or to click once the skip the text animation and then click a second time to skip the whole dialog.
-Controls for jumping overlap, so if you press "W" and "Space" at the same time you jump twice on the same frame so you have a double jump with allows you to skip some platforms (not sure if this is intentional)
-(more of a nitpick) Pause menu slider has no background so i didn't realize it was a slider and jump scared myself by turning the volume to max.
Conclusion:
Fantastic work!. Game is super polished and looks great ta'boot. Really has the possibility to become a full fledged game in the future if not for just being a game jam game. Good impressions all around! Wish you luck in the votings!