The Runaways Level and Character Pack Add-on for LEGO Marvel Super Heroes 2 has 5 achievements worth 50 gamerscore.
Complete the 'The Great Escape' level with all Minikits unlocked
Defeat both enemies in the 'The Great Escape' level with Molly Hayes
Destroy both sets of sunglasses positioned on the Magic Trap Masks.
Complete ''The Great Escape''
Complete the 'The Great Escape' level after achieving True Believer status