Much like SergeantArcade, I had a hard time getting the box to kick. I often found that my kicks barely moved the package or did nothing at all, and sometimes when trying to get closer to get a better kick, I ended up on top of the package. For the first level I managed to beat it only because I managed to slide it across the floor instead of kicking. If kicking became more forgiving to the player, I would be willing to give this another go. This is a concept I actually think would be a lot of fun especially as the project progresses. I'm not personally a fan of the end of level audio, but I get that's the style you're going for. I'd like to see some audio feedback for the UI. Hearing is often just as important to UX as visual responses.
There was one time I got the box to right in front of the correct door but it wouldn't credit me as completing the level and I failed, but that felt like a glitch. It was at door 8 on level 1.