Time limit: 5:30
Enemies: Light Orc Warrior , Medium Orc Warrior, Kobold Runner
Recommended weapons and traps: Sceptre of Domination (Blunderbuss), ice vent (tap), acid sprayer (wall of spikes), spikes
Reward: spring trap
Enemy will attack from two entrances (W1, W2). First move to the left side (W1) and tap there (P1) some acid sprayers and ice vents. After release the horde start shooting at enemies (watch out for fast cobolds, which can run to the rift (S1). After the first wave tap sprayers and vents on the left side (P2). Continue this tactic and eliminate orcs from the bridge (picture) where you can stop the cobolds. If you have problems with enemies you can tap spikes and vents in front of the bridge (P3).
Place three ice vents at the beginning of the bridge (P3) and set there one paladin. After that start setting sprayers on the left (P1) and right (P2) side. You can also buy another paladin after a while. During the defend watch out especially for cobolds (they can be killed by brimstones set on the bridge).