This is the road to hell.
The extraterrestrial life forms the Primers slam this challenge down to any elite EDF soldier: A mission pack of over 10 incredibly difficult missions. Enemies that only appeared in the hardest missions of the main campaign now appear in droves. Aliens with gear they didn't have in the main campaign will assail you. Are you brave enough to take the first step on the road to hell?
Over 30 new weapons!