Squire-only solo Insane HC build for Castle Armory. No bought/traded items, self-found only.

Equipment/Stats:

• By this time you should have 99 points in speed. You will be constantly running back and forth on Insane, so you need to go as fast as possible. 
• By this time you should also have a full set equipped, and each piece should be at least Epic (level 34).  During my attempts at this level I managed to get level 45 for Legendary gear.
• Every piece of armor should have +Tower Health and +Tower Damage on it
• You should have an Epic+ weapon fully upgraded, all points into base damage.
• After 99 speed, level points should go into +Tower Health and +Tower Damage

Map Strategy:

• The top center and bottom 2 spawn points are stronger than the rest, so a little extra firepower is needed
• Keep upgrading during the wave and in between each wave as you collect loot and chests.
• There's enough mana on this map to upgrade every defense to at least level 3.  The bouncers on the top spawn and bottom 2 spawns should be upgraded to level 4.
• Hint 1: an Ogre spawns on one of the later waves here.  I recommend standing on top of the bouncers and turning on Blood Rage while you take him down.