1. Alien Swarm: Reactive Drop Achievements
  2. Insane Campaign: Orion's Threat achievement
Alien Swarm: Reactive Drop

Alien Swarm: Reactive Drop

12,424
198
3.36
Game action
Alien Swarm: Reactive Drop
Zop

Zop

3,153
86
23 Apr 17
90h 8m
53%
Zop

Insane Campaign: Orion's Threat achievement in Alien Swarm: Reactive Drop

This achievement has been deleted by Steam
Insane Campaign: Orion's Threat

Complete the Orion's Threat campaign on Insane difficulty or harder.

Insane Campaign: Orion's Threat0
02 August 2017
Hide ads

Have you got any tips or tricks to unlock this achievement?
Add a guide to share them with the community.

Sign in and add a guide
Do you have a question about this achievement? Please post it in the Alien Swarm: Reactive Drop Forum