Here is the full list of all 35 Double Cross achievements.
Just finish your training. Easy.
Learn the ropes collecting clues and talking to other agents in RIFT.
Find enough evidence to locate and put Ripjaw away.
Stop Ripjaw from terrorizing Reptarria.
Find enough evidence to put Hancho away.
Recover the Pineapple Files from Hancho.
Find enough evidence to identify the culprit in Gootopia.
Save the hostages in Gootopia.
Defeat... yourself?
Discover the identity of Suspect X and solve the mystery.
Discover the TRUE identity of Suspect X!
Collect 57 out of 114 pieces of Upgradium.
Find all 114 pieces of Upgradium.
Beat the final area without any equipment.
Get the top score in every game in Funky's Arcadium.
Complete Firebrand Factory Mission in 15:00.
Complete Heavy Metal Oasis Mission in 15:00.
Complete Bone Crackle Canyon Mission in 15:00.
Complete Slimy Mire Mission in 15:00.
Complete Goo Grotto Mission in 15:00.
Complete SPHERE Station Mission in 15:00.
Complete Kaneda Boulevard Mission in 15:00.
Comeplete Tolmekia Palace Mission in 15:00.
Defeat a boss using the fireball technique.
Complete all of your missions except Funky's Arcadium without losing all of your health.
Defeat the final boss with the Glass Cannon upgrade equipped.
Help V"!!k}~X join the RIFT academy.
Talk to an arrested friend before the invasion.
Listen to gossip from 5 characters.
Make someone lick the mysterious goo.
Show Director DeLabourde 10 clues that she doesn't care about.
Show a love letter to at least 10 characters.
Reach the central computer in Tolmekia Palace before anyone knows you're there.
Get Valery and Dash's full storyline.
Earn all Commendations.