[8:15 AM] xezrunner: In case anyone is interested, here's what I've found out so far:

To open the console, set a binding in Documents\My Games\Dishonored\DishonoredInput.ini to the command:
set Console ConsoleKey Tilde

When you push this button, you bind the console to Tilde.

Now if you press Tilde, the console should pop up.
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To enable cheats, type these commands in order (it's not case-senitive):

set PlayerController CheatClass class'DishonoredCheatManager'
EnableCheats

All UE3 cheat commands work, and most of the Dishonored cheat commands work, though there aren't a lot of them.

You can decompress Dishonored\DishonoredGame\CookedPCConsole\DishonoredGameFull.upk and open it up in UE Explorer, find the class DishonoredCheatManager and type in the top right search bar exec to find all the Dishonored-related cheat commands.

For UE3 commands, you can do the same with Engine.upk and the CheatManager class, or you can also just look online. Most of them work.
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Useful commands (not case-sensitive):

MaxPowers - Gives you all the powers for said character
AddPower powername level - Gives you power (not cross-character unfortunately!)
God, Fly, Ghost - UE3 commands. Fly and Ghost combined make up noclip.
Walk - Opposite of Fly.
PlayersOnly - Freezes everything except you.
teleport - Teleports you to cursor location
start mapname or open mapname - Starts a map (L_XXX_P.upk) (must end with _P!) (LEVEL TRANSITIONS DON'T WORK)
BlinkShowRange int - Debug for Blink Range. int is seconds to show it for.
ce eventname or CauseEvent eventname - Trigger a map-specific event (useful for skipping or starting cutscenes, debug teleporting, stopping counter in Bonfires etc...)
set class property value - Set properties' values in classes - EXTREMELY USEFUL
DisSlomo float - Slowmotion for everything
DisSlomoFull float, float - Slowmotion for player, world(edited)