Everything that worked in WB works in PoP, exactly the same.
However you will get the Cheater Achievement if you use the hand of god (kill enemies), or restore health cheats. If you get the cheater achievement you will not be able to get any other achievement, and I think total victory might not be possible (Really not sure about that one).
Oh, yeah, you get a warning (or two) about cheating before you 'go to hell'. Also, the cheat catching script is based on the key combinations, so it doesn't matter when you press the associated keys, you will get the 'achievement' even if cheats are disabled.
There is also some kind of trick that can be done on day one, but I am unfamiliar with it. I think a search for 'training ground cheat' might turn it up, if not try 'training ground noldor'.