Golden Egg #86 – Thor’s Hammer can be opened by obtaining three stars on all levels of Ragnahog.
You only get one bird for this level, but one is all you need. Throw Red straight ahead into the snow blocks supporting the Cowboy Pig (?!?!?), who releases a flaming arrow to take out the ship. Make sure to wait it out, as floating debris can rack up some more points. The score in the video below is 92510.