Thanks! Level 3 is the last one in this game concept, so think about it as the "final boss" level ;-)
We have a lot of ideas for new levels (many a lot harder), but the MegaJam time limit was 7 days and we literally created the game from scratch based on the given "As above, so below" theme.
If we get enough good feedback, we will certainly implement the full game (and fix all the funny bugs people are reporting - thank you!).