Mind Your Step
Find the secret in The Abomination.
Act 3 Veteran
Complete all Act 3 maps on Veteran difficulty or higher
Act 4 Veteran
Complete Act 4 on Veteran difficulty or higher
Act 2 Veteran
Complete all Act 2 maps on Veteran difficulty or higher
Kill an Ogre with the howitzer.
Find the secret in Job 10:22.
Act 1 Veteran
Complete all Act 1 maps on Veteran difficulty or higher
Find the secret in Remnants.
Complete a mission with each Cleaner.
Rescue a teammate from a cocoon.
Complete a map without any players on the team killing a single Ridden.
Port Man Toe?
Find the secret in The Devil's Return.