I posted a demo on the Showcase forum:
http://forum.thegamecreators.com/?m=forum_view&t=66145&b=25&p=0
Working Stats: Money, Armor, XP, Level
You can use one or all of the stats, just modify your setuplevel.fpi to remove whatever you don't want to show.
For those of you who wanted to script yourselves, I made some functions and conditions for use in your own .fpis, posting below.
Check for xp to implement your own level systems. I will add some gamewide modifiers soon for level to affect certain game mechanics.
I am not sure if this works for multiplayer, someone will have to test. Enjoy!!