Thief: Deadly Shadows Cheats
How to beat the undead
If multiple undead or Hammer Haunts are on a floor, toss down a Holy Water into a doorway. Then, lure the undead to chase you and run across the holy water. The undead will follow, killing themselves on the Holy Water. This is a good way to conserve Holy Waters.
How to beat Zombies
When a Zombie is unaware of you, a single flashbomb will kill it. When it is aware, two are all that is required.