Options:

Numpad 0 - Inf Health
          - Keeps you alive

Numpad 1 - Inf Oxygen
          - You wont run out of oxygen 

Numpad 2 - Inf Adrenaline
           
Numpad 3 - Inst Abilities

Numpad 4 - Fast XP
          - You gain a lot of XP

 End - Instant Break Armor
          - Enemies Armor will break quickly when player attacks

Delete -

          Numric 7 - Set 99 Potions/Throwables
          for selected Item/Object to throw etc..
           
Numric 8 - Store Location
 
Numric 9 - Teleport

Numric 0 - Undo Teleportation

Page Up - Toggle Time Of Day
         - Allows you to cycle the time of the day and nights

Page Down - Teleport to waypoint Marker
         - Take it easy with this, store a location with the teleporter before using this is recomended and also make a save before to be safe if going very far distances!
           
 Insert key - Enable custom world speed
          - Let's you change the games world speed
          - Adjust slider to set the speed