Complete your first story mission
Fix an elevator
Turn on the lights in a dark area
Destroy a sandworm
Save a hostage
Fix some broken cogs
Kill a king crab
Make all the elevators work
Bring light where darkness rules
All their bases belong to you
No More Totems
Find all hot spots
Save all the hostages
Make all the communications work
Destroy signal jammers
Turn all the fans on
Make them all spin
Exterminate all skelly nests
Destroy all building infections
Turn on all the Terra forming devices
Drive the interceptor
Join the book club
Alternate ending