Great game, but i can't give it five stars because: When i want to retreat my students then plz run not fight (Specially on Hector, good thing i had a hit and runner); also perhaps a few more classes.
Achievements tip: Race: fly on the lower corner most of the times and the obstacles will most likely miss you, you can also use them as walls against enemies from behind; BattleField: use gravity potions and fly high, they won't hit you most of the times, three should be enough for the trip; Masochism: really... just jump/fly between the two appendages and spam ice, all hp upgrades are recommended, after a long fight you should make it, also stack about 10 or 20 hp potions for safety, second part is easy, if you have full hp at second part then you need to play very badly in order to die and last part is just running around (no need for offensive potions).
I only found 4 secret characters: the one the left of potal (fly or super jump); the one on the upper left of teeth (area before the Movo ship); in the last pit after the race in Metza; and flying up the sleeping chamber tower.
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