In general it's fine, you should consider that being a game no longer than 60 seconds the score should not be the same for everyone who finishes the route, there should be something extra that increases or decreases the score, to try to beat the score reached. 

Thank you for sharing your first game, many encouragement for you to continue creating.

Graphics are pretty cool.  I didn't have much of a problem with the hit boxes.  Although you can also survive most of the game just going to the bottom of the screen.  Music loop is a bit too short and very repetitive.

If you swapped box colliders for circles it would much more playable. But for the first time trying you made nice game.

Loved the graphics and the music but as others said the hitboxes are too big. Good start as a first game though, keep it up!

Make the collider smaller and it'll be more playable. Right now, it feels unfair when the visuals of the player don't touch at all the visuals of the enemies but I'm still hit with game over as soon as some large invisible box or circle touches. Also the units seem fairly large and I can't quite see enough of the sky to make wise maneuvering decisions. Congrats for completing a jam game! Think of the lessons you've learned here and build on that for the next one. Think of how you could add features to this one, adding mechanics like shooting, an ability where you can slow down time, ghost through an enemy, etc.