Thief: Deadly Shadows cheats and cheat codes for XBox

Glide across the floor:
Slightly tilt Left thumb-stick

Getting to the sunken Citadel in the docks:
When you first arrive at the docks, go ahead the store. Pass through the
Quarantine gate, then stop. You will see a box in front of you. Smash it.
Go down the ladder and follow the stairs.

Nightvision trick:
If it is too dark to see anything while hiding, increase the Gamma/Brightness
correction in your options menu.

Arrow Shops:
Each store only has one of the 4 elemental arrows:
Docks: Fire Arrows.
Old Quarter: Gas Arrows.
South Quarter: Water Arrows.
StoneMarket Proper: Moss Arrows.

Free Water Arrows:
In the training mission wait by the house the torch exercise for water
crystals to keep respawning. Before you leave the Blue Heron Inn forever,
you may want to take your fill of 25 water arrows, which will go a long way
in helping you keep shopping costs down.

Kill Zombies:
If a Zombie is unaware of you, use one flashbomb to kill him.
If it is aware, you need to use at least two flashbomb.