The game has three puzzle rooms and I've just finished the first one.

So good things right now are that a third of the game is playable and I have a solid design for the 2nd puzzle that I'm going to try and implement before I go to sleep tonight. I have another 3-4 good working hours to try and blitz that.

One the bad side I'd hope to have the whole minimum-viable-product playable tonight but I don't even yet have a final design for the third puzzle room. This is going to put a lore more pressure on tomorrow.

So I'm not where I wanted to be tonight, but I have made a lot of progress and I'm not far enough behind that I need to start scope cutting yet. If I don't finish the second puzzle tonight then maybe it's cutting time.