The feats and your progress can be tracked via the pause menu. Complete the following feats:
Feat: Love is a rift
Description: Find 3 bouquets of flowers
Reward: Challenge Map - The Colosseum
The first bouquet can be found in the headquarters after the Olympus level. From the first area, walk through the door on the right. In the next room head right, passing the 3 grey doors and take the hall in the background. On the next screen, go in the first door on the left and into a room with a table in the center. Walk over to the left side of the room for the bouquet.
The second one can be found by replaying the third episode, “Hulk Have Nightmare”. At the very beginning, swap in Thor and use him to open the zipper in the back left corner. Once open, it will be right in front of you.
The third one can be found by replaying the fifth episode, “Soul of a Maze”. At the very beginning, swap in Thor and use him to open the zipper in the back left corner. Once open, it will be right in front of you.
Description: Defeat 100 enemies with Thor’s Heroic attack.
Reward: Classic Costume
To do a heroic attack you need at least one circle of your special meter filled, then just press to activate it. This is cumulative and counts throughout story mode, free play and Challenge mode.
Feat: Mightier than thou!
Description: Complete all previous feats.
Reward: Achievement unlocks.
This unlocks automatically when you complete the other 2 feats.