Iron fist of anger 3 hidden characters

The first level: after knocking down the captain, punch wildly, and the captain will not start until this level is over.

Level 2: When you hit a kangaroo, kill the trainer (the ugly one) first, and then kill the kangaroo without killing the kangaroo.

Finally, the second level of BOSS: the one with black head and red head, press the jump key until the end of this level can be used.