Hey, I just played your game. It is nice as a first game but I do have a lot of feedbacks. Please make sure that u consider these feedbacks for improving and understand that I am not saying your game is bad.
FEEDBACKS:
1) Dont use assets from the asset store. Making arts by yourself or with your teammates gives more uniqueness to your game.
2) Modify Controls. Not everyone is used with space for jump. Some prefer "w" and some prefer up arrow.
Otherwise nice game. Please be sure to rate my game