Reason for Build:
I find Endless Spire an easier map to play on Survival and with this build, it it easily AFK Able with the occasional repairs in between rounds. This build can be used as an "Early Game Farming" source for Experience on your Characters and potientially a good Armor Farming area if you struggle with different maps. The better armor does not come until past Waves 15+ and for ONLY Armor Drops, be sure to only have Summoners out during waves.

First Wave Build:
First Wave: 4/35 | Starting Mana: 500
Ensnare Aura: 30 | Electric Aura: 50 | Strength Drain Aura: 60 | Stack: 140x3 = 420
Buff Beam: 70 | Place your 5DU Buff Beam at 2
(Upgrade your Beam and Auras as much as you can, but save maximum cap mana for build next wave.)


Full Build:
1. Both Sides will have a Stack of Auras (Ensnare, Electric, and Strength Drain), 1DU Reflect Beam, and 5DU Buff Beam. On Top of the Buff Beam, you will have 2 Archers -Spider+Mage Stack - 3 Archers (3rd Archer will be placed closest to South Crystals but still on Buff Beam.)

2. Stack of Auras (Ensnare, Electric, and Strength Drain), 1DU Reflect Beam, 5DU Buff Beam, Inferno Trap, and a Harpoon Turret. On Top of the Buff Beam will be 2 Archers - Mage - 2 Archers - Harpoon Turret. (The Inferno Trap should also be within the Buff Beam.)
Note for 2: Due to Mix Mode, Wyverns will come out of the Top RIght Spawn and can easily hit your Crystal if you don't have enough range/damage on your Minions/Harpoon

3. 5DU Buff Beam with 4 Deadly Striker Towers (Pointing Different Dirrections, Use Green Lines as Directional Guide.)
3. (Optional) If you do not have a good Apprentice, you may use 4 Harpoon Turrets and place 2 Gas Traps on #1's Buff Beams

4. 6DU Buff Beam with 2 Archers - Mage - 2 Archers. (Build Archers as close as you can to the edge of the Beam to get Maximum Range Coverage over your South Crystals)

The Order for Upgrade Priority is: Buff Beams, Auras, Area 1, Area 2, Area 4, Area 3