Access to the B2 level is restricted by large icicles until you defeat the mini-boss at the end of level B1. Behind the boss, is a chest with Gothic Armor in (requires Level 2+ Jump), which can be a good source of defence early in the game.
When you gain access to the lower floor, making your way to the end will grant you access to 5 frozen pillars. Standing between the pillars you can warp to the separate section of floor B1.
- Find Chests