Sumerian Six
Allack's Progress
Löwenfels Castle
Beat the Löwenfels Castle level
Lilleby
Beat the Lilleby level
Madinat Aldaala
Beat the Madinat Aldaala level
Al-Bhutan Oil Depot
Beat the Al-Bhutan Oil Depot level
Prototype Testing Site
Beat the Prototype Testing Site level
Gis-Eren
Beat the Gis-Eren level
Kammler's Secret Base
Beat Kammler's Secret Base level
Kammler's Underground Complex
Beat Kammler's Underground Complex level
Site of Sacrifice
Beat the Site of Sacrifice level
Lieutenant
Beat all missions on any difficulty level
General
Beat all missions on Medium difficulty or higher
Field Marshal
Beat all missions on Hard difficulty
Hey, Sis!
Isabella Sterling reluctantly joined forces with her brother
Acerbic Personality
Rosa Reznick agreed to help stop that fool, Kammler
Bear with Me
Wojtek Galica and his beast joined the Enigma Squad
Daddy Issues
Alistair Sterling decided to join the action in person
Face Your Inner Demons
Siegfried von Adelsberg received a (somewhat lukewarm) welcome back to Enigma Squad
Where Is Your God Now?
A New Challenger Has Appeared
Complete your first Challenge
Challenge Accepted
Complete 10 Challenges
Hardly a Challenge
Complete 30 Challenges
You Dare Challenge Me?
Complete all Challenges
I Want My Scalps
Kill 100 enemies
Stamp 'em Out
Kill 500 enemies
Kill All Nazis
Kill 1000 enemies
Can Opener
Kill your first Panzerwolf
Ghost Buster
Kill your first Geist
Apage Satanas
Kill your first Demon
That's not up to Code
Kill at least 5 enemies with a single environmental kill
Gorge of Eternal Peril
Launch an enemy into a chasm
Nothing to See Here
End an alarm by killing every enemy in the area
Enigma Squad Certified
Fully upgrade All Skills