Those last two levels seemed to escalate so quickly! I don't know if it tired me out or what, but it was definitely rewarding to finally figure them all out!!
Not knowing what all the builds do does suck when you can't change to go on a different path. Certain paths sound useful, but when you choose something that is no longer viable you have to restart the entire game =\
I had the fly/larvae set up slightly different and it still obeyed the rule on the paper but didn't activate the next step. I had to look up the actual set up and I only had to swap two pairs on the bottom two rows to make the puzzle complete.
Could there be some more aquatic versions of things that you bounce off? Like a swimming Bull Roboto or floating cannon? =D Maybe even a jellyfish (jellywhale) to slow people down!