Quickly scroll to the level with the reward you want and tap its Quick Battle button before it grays out.
For the 2 people that play Angry Birds Evolution... : r/angrybirds Angry Birds Evolution Hack
: For consistent rewards in Eagle Mountain, some players suggest sticking to a single door (like the third door) until you are captured. This method can sometimes help players reach floor 20 more reliably. Quickly scroll to the level with the reward
: To level up faster, fuse birds of the same color into your primary bird. This doubles the XP gained from the fusion. Angry Birds Evolution Hack