Hmm... I'll try my best to aid you in your quest of dominance over Chill clawbster.
you know I had a tough time beating this Dream Eater and it was kinda hard to hit him when it moves around all over the place the ceiling, walls, in the air pretty much everywhere but you can equip yourself at least one Hi-potion and Curaga. use magic or be on the offensive at times okay. my memory's of engaging this foul beast of monstrosity are kinda lost. but I'm gonna play it again to refresh my lost memorys.
I know I'm not much help on advice. stay cool facing this creature and have fun doing it.