Playing as Aldrich Killian: die and respawn

Complete 'No Strings On Me'

Play as any version of Falcon and as any version of Cap, while in Washington D.C.

Transform from Banner to Hulk

Complete 'Lost in the Aether'

Complete Level 3 - Exploratory Laboratory

Complete 'Korea Prospects'

Complete first Helicarrier skydive

Complete 'Anger Management'

Complete 'Helicarrier Havoc'

During 'Prologue', jump into the fires of Mount Doom as Isildur.

Dress a character completely in treasure items.