The 1 next to the candy boss simply go to level 5 explore the whole thing and unlock the gate from 2nd entrance in there should be a rope and on the otherside a hidden path with a ledge visable, then don't fight the boss and instead surrender by holding (F).
The last remaining 2 requires you to get the other 2 beasts, just like with 3-4 goblins, find the remaining bird beasts and gather them all to you.