How to light up the Hero Island icon?
Hero Island icon levels and lighting conditions:
Level 1: Reach level 22 in the Hero Island game, and activate and use dual heroes.
Level 2: Reach level 26 in the Hero Island game, and have a friendship score of at least 330 points with at least one friend.
Level 3: Reach level 38 in the Hero Island game, and gain 3000 points of sawtooth reputation.
Level 4: Reach level 42 in the Hero Island game, and have any 4 combat skills reach level 8.
Level 5: Reach level 52 in the Hero Island game, and...