"Friends" that have golden armor II equipped upon hiring lose it the next time you log in. You need to rehire them for the armor to be replaced. Its pretty annoying since these characters tend to come with great equipment for dealing with the difficulty spike and would want to keep them for a few levels. Its a bit of a waste of gold to rehire them each time and its not even possible to rehire after you've leveled up. Bugfix please and add in a way to cycle hunters that can be hired and description showing the ally's weapon/armor skills. A buff/debuff indicator somewhere above the character portraits would be great, letting you know how much longer the buffs/debuffs last. Using items in battle needs some fixing, like disabling using a potion on someone with full health. Misclicks happen and its a problem when you just used your last popo's hammer on the wrong guy...
A way to track completed missions would be appreciated even if its just a simple tick on the side of the mission name. Instead of having the missions each chapter show up randomly, why not just display all of them on 1 page where you can just scroll up and down to see which mission you want.