The game itself is amazing but I did find a few little things here, 1st on the last delivery I kept clipping into the ground causing me have to wait to restart the last delivery, I would suggest adding a reset button for the player that mess up and don't have enough time, also some particle effects when jumping would be cool or maybe a dust cloud when landing or some more juice to players interactions or something, Anyways This game was a fun experience and would Love to see it expanded upon in the future (hopefully) I am very impressed that you managed to pull a 3d platformer game with decent enough mechanics and character controls off,
Good job and Goodluck :)