Awesome game. There's easter eggs too! Lvl 27 has a cube with a heart, which is a portal reference. Lvl 28 is from the original donkey kong. Makes me wonder what else is in this game that I didn't see the first time.
Really wish the system allowed you to store the mana pearls and you used them to purchase titles, characters, starter items, spells, or even stats. Earned Epic using Cursed Golem!
Some combinations just plain suck. Really wish there were more gear upgrades for people who just get plain stuck on a battle. Paladin + Defender for the win!
To fly backwards, wait until you're at about 2-3 mph speed do a dive down then quickly dive upward. If you do it right you'll completely flip over and it'll read -1mph speed.
Having beat the previous game completely... I have no desire to play this version as it's not really anything new. Also, I do agree with others that say achievements need to get skill points/bonuses.
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There is also plenty of references in stage names alone.