The game this package comes in is extremely well crafted and polished. I loved it. The only thing that didn't totally convince me is totally subjective and it is the deterministic level design, which basically reduces the game to writing down a sequence of buttons to press, whereas having it randomized would keep the player tense and focused the whole time. I understand there's a focus on speedrunning and having completely randomized levels isn't fair in that scenario, one could have a constant total amount of tiles needing 1 or 2 turns (which I think are all the possible combinations in the design space) in order to keep it fair (same amount of keys to press, always different sequence).
Still, this is very high quality work and you should be proud!