Fable II Walkthrough

Move down the first hall of the tomb and you can dive into the water at the bottom of what appears to be a well. Once in the water of the lower cavern, swim to solid ground by following the glowing trail. Move through a doorway-esque passage and dive off another ledge, into the next room.

You'll encounter a pack of beetles inside the next cavern, which you can easily lay to waste by holding your ground and blasting 'em with your crossbow. There are more beetles than you likely realize, so keep looking out for glowing red objects to appear and give 'em a quick shot to get rid of the buggers. After clearing the room, look for a Silver Key tucked in a corner along the left wall.

Follow the glowing trail into a long hall where you can expect to find more beetles impeding your path. The hall opens to a larger area. Look to the left for a purple-glowing door that you can open to find a hidden treasure chest with a bag filled with 150 gold coins.

You've got to shoot a floating target at the far side of the room to open up a doorway to the next hall. Just inside the hall is a bit of a detour to the left that'll lead you to a chest with the Rusty Mace. Grab it and a few beetles will spawn behind you before you can continue following the glowing trail down the cavern hall.