I'll start off by saying I hit the teleporting bug so I didn't finish this game, but I mostly enjoyed what I did play.
I agree with others saying Jills constant comments getting annoying, having the banter be more context sensitive like only on certain tiles. Or maybe if the characters take too much damage have Jill comment on boys being useless.
I like the idea of XP being reward for the player stepping on tiles, as it rewards more thorough exploration. But I think post-jam it could stand being toned down to just having the XP granted when stepping on a new tile.
I was told to go speak to a man (I think his name is Cu Chulainn like the mythical hero?), but when I walked up to him and interacted he just introduced himself then nothing happened. Was he supposed to be a trader that was cut? Maybe I missed something due to Jills voice lines.
For the positives, visually the game looks great, as does the UI! The false walls were integrated well, and the mine felt like a mine, which is important imo.
The combat could probably use some more polish, but I say that as someone whose combat also needs more feedback added.
I would suggest adding some tooltips or other information showing what each ability does. To me, Jill's attack looked more like a healing spell from the icon. Also I think allowing the player to open the character/inventory window by clicking on the character portraits would be a nice quality-of-life addition.
There's some great promise here and a fair bit to like, but it has a number of issues that need to be resolved.
Still though, it's clear a lot of work and thought was put into this, and it's unique in being the only entry (of the 43 I've played so far) with inter-party dialogue. Good work!