Floor 3

On Floor 3, you will encounter a guard blocking a gap in the walls. You can choose to fight him. The alternative route is to walk right and up to the north wall to approach him from behind, but he will rush to attack you anyway.

Engage the mini-boss: Tower Sentry.

His initial attack will do around 7 or 8 HP damage. He will save up his strength for a more powerful attack on the next round, which will hurt for about 20 HP. Choose the Defend command when that occurs. He might do this twice in a row, so defend again.

Use Sap twice to lower the enemy's defense.

Attack with the Boomerang for around 18 points of damage, or equip the Copper Sword for an easier fight.

Do not use up all your MP, as you will need some for another battle. Heal up using Medicinal Herbs.

Upon defeating the Tower Sentry, you will receive 95 experience points and clear the way through to a treasure chest containing 130 Gold Coins.

After this, head down the west side of the tower to emerge outside.

Go right and enter the open doorway to find yourself in the room at the east side of Floor 3.

Take the stairs up into a room with moving tiles.