Its too bad, I havent a guardian
I´ve just read about this exploit
If you have a guardian test it now before it gets fixedGuardian fighters have a little feat called Reckless Attacker.
Carefully take a look at what it does: You gain bonus Power proportional to how much Guard meter you have remaining. When your Guard meter is full you gain 100% additional Power.
Seeing as how we can use Cheat Engine and set our Guard to be whatever we want, try setting it at a few thousand. Congratulations, you just won the game.
Source: MMOG Fails: Another day, another Neverwinter exploit. This time it's virtual immortality and the ability to almost instantly kill your target.