Thank you for your response! It's good to hear that you reached the final level. The RNG makes it difficult to balance.
Fully agree that the mortars and shock drone are not very imaginative, we struggled to come up with more diverse ideas.
We are definitely working on adding more variety in backgrounds and enemies, and will be definitely leaning into the ridiculous, especially for the final boss we're going to add.
A tornado would be a good background, it would make sense for the falling stuff, we can try to make it understandable in the pixel art.
We also just added a glide powerup (though it requires you to unlock all the achievements).