Orc Berserker

"Less intelligent than the Orc Raider, but twice as angry. The Orc Berserker doesn't bother with armor as pain only fuels his rage."
 * Unarmored
 * High Health
 * Increased Damage as he loses Health
 * Vulnerable to all Towers

- Lance of Dragoncross

Orc Berserker as the description say boast high health which help them withstand several attack and also gain additional damage to his already high damage output as they losing health.