From Space achievements

Reach specialist level 20

Complete the Operation Turtle and Hare mission

Destroy the Central Station Harvester

You have gained a level in the resistance mode.

Complete the Operation Tunnel Rat mission

Have a full squad of co-op players

Reach specialist level 10

Unlock a new character in the resistance mode

Complete the Operation Lightning Obelisk mission

Destroy the Power Plant Energy Harvester

Complete the Operation Downed Dragonfly mission

Complete the Operation Groundwork mission