Turn off your brain, turn up your reflexes, but turn down the sound: awkward voice acting makes things extra campy. Then again, this is a story about mystical powers and ninjas with grudges. It's not Shakespeare, and it's not supposed to be.
If you love all things MK, you'll see Shaolin Monks as a special milestone in the franchise and a reward for your loyalty. Otherwise, it's just a fun brawling diversion with lots of gloopy blood and two unlockable characters. Either way, it's good stuff.