Thank you, I really appreciate the detailed review! I agree with the suggestions, and many are already implemented in a patch that will be released after the voting period is over. Candles will be picked from a pool with 2 of each that will reshuffle after all run out to ensure that players are getting more predicable draws and are never holding 3 of a kind. The 3 bookshelves were intentional, it's supposed to be a level that teaches players how to decouple combos to make new ones, but other map generation issues will be fixed. Attacks will happen when characters bump into each other to make targeting easier. Hints for what actions do will not be in this patch, but most likely will get added in the first update. I'll also look into the resolution related issues.
I think that the frustrating parts of puzzles will be less noticeable once I switch from mandatory objectives to optional ones which is the intended design. A lot of stuff that feels like it's not fully working at the moment is mostly that way because I completely ran out of time this year and had to pick quicker ways of implementing features in ways that still made some sense.