Complete Aerial Assault on any difficulty.

Destroy a Jet Soldier's foot thruster 5 times in Campaign or Escalation.

Finish any level in Co-Op.

Ignite a Brute's back 5 times in Campaign or Escalation.

Escaped the Haven Troopers in the Middle East by non-lethal means, and obtained the Frog Soldier Doll.

Kill 2 Snipers in 5 seconds in Campaign.

Headshot a Cloaker when it is invisible in Campaign or Escalation.

Obtain the Twisted Pole artifact.

Discover and enter the Ocher Stone Swamp, an optional area on Rainbow Moon.

Level up any of your active skills to level 50 or higher.

Complete Dark Energon on any difficulty.

Multi-Kill 3 car soldiers at once using an explosive weapon in Campaign or Escalation.