Thank you very much for this great, invaluable, feedback. I had only minutes every so often to test gameplay, so was hoping it would run but knew they'd be faults. You have given me some ideas on tidying up the random feel and gameplay.
It's all still very wonderful for 3 hours, better than my effort, I think. But I try to review games while ignoring the development context as much as I can (usually not well) so as to give useful criticism.
Again, I cannot stress enough how great this pixel art is. Really excellent.