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