To get through this room you have to fill up the Anger Meter in the game
Getting Started - Talk to Launa and she will tell you about the origin of the Hole and about her son and husband. When the chance comes, tell her that you will go look for Last Chaos Gold her husband and son.
Now take a ope, use it with the Rift and climb down into the Anger Room.
The Anger Room - As soon as you enter you will watch a small cut-scene. To get through this room you have to fill up the Anger Meter:
To do this, you have to kill the monsters in the room. You will have a choice of taking a weapon from the weapon rack, and each weapon only hurts one type of monster in the room:
Sword - Anger Unicorn
Spear - Anger Bear
Mace - Anger Giant Rat
Battleaxe - Anger Goblin
Don't be surprised if you hit high in the room: as you can see from the pictures below, it's natural to hit well over 100!
Kill the animals in the room until your Anger Meter fills up, and once it's full, your character will do a weird dance and a dragon comes out.
Then the screen blacks out and you will see a short cut-scene. Now go through the exit, not the ladders.