Boss: Blow up the frozen creature.
Note: Those blocks prevent you from progressing that direction, so perhaps that glitch may have made you miss a part. The boss room is near the beginning and the boss key is in the chest. But when you encounter him he's just a creature frozen in ice with a map in front of him. If you bomb it a hole will be revealed. Enter the hole. Lol
Edited by NewJourneysFire, 09 June 2011 - 10:58 PM.