MP has been implemented in some cases, such as the Paladin's parry consuming MP when activated. Yet I have no way of know how much MP each student has. Do you mind adding some kind of indicator?
Whenever I go to upgrade my defenses, the description to the upgrade seems to be one step behind. For instance, when I go to upgrade say, "Generate 300 gold every 10 seconds", and when the man pops up for assurance says "Generate 350 gold every 10 seconds."