Here is the full list of all 38 LEGO Indiana Jones 2: The Adventure Continues achievements worth 1,000 gamerscore.
Use Scholar access 10 times.
Complete all Story Levels in Quick Play modes. (Single Player Only)
Complete the game to 100% (Single Player Only)
Unlock all of the enemies in the game. (Single Player Only)
Complete all Bonus Levels in Raiders Hub.
Complete all Treasure Mode Levels in Raiders Hub.
Find all the Artifacts in the game. (Single Player Only)
Unlock all of the vehicles in the game. (Single Player Only)
Complete all plane races. (Single Player Only)
Complete all Bonus Levels in Crusade Hub.
Complete all Treasure Mode Levels in Crusade Hub.
Complete Hangar 51 in under 5 minutes.
Complete all Bonus Levels in Temple of Doom Hub.
Complete all Treasure Mode Levels in Temple of Doom Hub.
Complete all Bonus Levels in Skull 3 Hub.
Complete all Treasure Mode Levels in Skull 3 Hub.
Unlock the Interdimensional Being. (Single Player Only)
Edit a Bonus level in the Builder.
Complete all Bonus Levels in Skull 2 Hub.
Complete all Treasure Mode Levels in Skull 2 Hub.
Complete all Bonus Levels in Skull 1 Hub.
Complete all Treasure Mode Levels in Skull 1 Hub.
Create a validated Builder level.
Destroy Indy with Spalko.
Unlock the Grail Knight. (Single Player Only)
Complete all Story Mode Levels in Crusade Hub.
Complete all Story Mode Levels in Temple of Doom Hub.
Defeat 50 Russians with Mutt.
Complete all Story Mode Levels in Raiders Hub.
Destroy 100 enemy vehicles.
Fire a Bazooka 100 times.
Destroy Indy 3 times with Mac.
Complete all Story Mode Levels in Skull 3 Hub.
Complete the Builder Tutorial levels.
Complete a "Build Your Own Adventure".
Create a customised character.
Complete all Story Mode Levels in Skull 2 Hub.
Complete all Story Mode Levels in Skull 1 Hub.