I'm sure somewhere underneath there is some sequence to unlock the Boss door (first on the left?) but I couldn't work it out and though there was a bit of a sense of intrigue, the minigames need to be a bit more engaging really to keep pushing through to find the sequence, still for a day's solo effort it's not bad. at one point I got stuck after a few combinations of room on leaving floating head room.
Would be cool to see what you can achieve with more time.