Wait so you play as the lone warrior then the final boss IS THE LONE WARRIOR? Also the special is not good enough make it like a giant screen attack -.-
50 gems for a reset? I know you need money and all but say if you picked warrior but wanted theif instead you could make it like one gem resets 10 points (or 2 by how it works) or make it like five from the start and it increases the price of gems needed to reset the tree.