🐭probably the hardest puzzle mechanic was the lasers, since those needed intricate sprites for the laser cannons in all 4 directions and they needed redirectors in all 4 directions, and they also needed to be able to process fast and have interactions with every other puzzle element and not fire off the edge of the stage and not cause any infinite loops if two lasers pointed at each other (all of these reasons are why they weren't in blobun mini LOL) so they took a lot of work and consideration!

I dont know about the others, but I know a frustrating part for me was trying to figure out how the background visuals should look. I'm happy with the way they ended up looking in the end, but it took a lot of iteration and discarded graphics to get there (some of those graphics I worked really hard on rip)