Shoot animals (Except for aquarium and Non-hostile animals) with your Bloom o'Bang! Find 20 shards and have a boss fight with a charging wet looking cat (make sure to shoot it when it's near) and press all levers to exit and send them all back to their universe. Do Parkour to find shards in the aquarium. Go inside cages to run and collect shards inside the planned on training thing. After finding all the shards in the cages, open the door in the middle of the zoo and start the boss fight.