actually it does use up potions. It will still give you a red if you have no potions, but if you have extra it will give you more in exchange for them.
If you think its boring that means that you don't like rpg dungeon games. that doesn't mean the game is bad. If it's boring for you go play a shoot'em up, not this. And if you don't play this don't give it a 1 because you don't like RPGs. this is one of the best rpgs that i've seen
Is this a bug or not, I entered a battle against the Dwarf Boss with full health for everybody after clearing everything else. Each of my charecters went once and then all the enemies went right after each other and killed all my people in one turn.