Recommended Level: N/A	Endless Spires
	Map Information
	Number of Crystals	Number of Waves	Defense Units	Starting Mana
		10	110	600
	Hazards		Mana Per Round
	Falling Off Ledges		400
	Challenge
	Assault
Spawn List
Survival Wave 15 Reward
Imp
Maps
The Deeper Well	Foundries and Forges	Magus Quarters	Alchemical Laboratory	Servants Quarters
Castle Armory	Hall of Court	The Throne Room	Royal Gardens	The Ramparts
Endless Spires	The Summit	Glitterhelm Caverns	Mobile:	Oakvale Crossing
DLC Lost Eternia Shards:	Mistymire Forest	Moraggo Desert Town	Aquanos
Other DLC:	Karathiki Jungle		City in the Cliffs

Good Tip from comments

With a mid level squire on console (50-70 tower squire) this is easy on insane. When you spawn grab the chests. With it go to the stairs leading to the crystals. Put a bowling ball on each side. Then go north to the double choke point, spinner here. Change to dps. Start game. Collect mana. With the mana build a harpoon looking straight north where the two crystals are. ( facing out into the sky,both crystals , you should be able to build right on the edge of the crystals platform. Do this to both sides. Then put harpoons on the left or right side of those crystals, make sure they don't face north in the minimal, you want south, like an L. Then set another bowl ball by the beginning ones to make a set. Start the match, after get the mana and put harpoons flowering the crystals, not the one lane, but the two south,where the two harpoons are. Then watch for ogres, you win.