Hey, so I am very glad to see this comment. You suggested really nice and unusual things (We don't hear many of your suggesions from other people).
1) Pause will be really helpful for game like this, but player can restart with last saved data for this room. So need to think about this deeper (and I will) :)
2) Yep, walls are blocking. 80% ofbplayers siad this, and it fixed already (can't update build while jam is not ended).
3) Yep we need to make generalized description of abilitties, probably in main menu page idk. General because of we are trying to rebalance all abilies, and I think we will do this much more times. I also don't want to "give all the cards" to the players.
4) About game page you are absolutely right :)
5) Ahah, I think problem is in hard to balance level. Other developer rebalanced level 6 times, but because of limited time we didn't check normally how to hard to play when you are not developer.
I'm really grateful for such a cool review and will definitely play your game after my nap <3
Upd: Oh, I already played your voice acting masterpiece :D