This is my idea for an advancement system that I use for when I play that I think is not too complicated and not too lengthy to advance if you only get to play once inawhile to feel like your getting stronger.
Going to call it it the Heroes to Champions Advancement System so I can sound more proper in making it sound offical lol
Anyway here is the break down for calculating xp or experience add the 4 major stats of the monster body mind attack and defense then divide by 2 if you have a remainder round down for regular monsters and round up for special ie monsters with more importance say the guardian of flamarg's tomb or the stone warriors and bosses and mini bosses verag, gark, and ulag and so on.
So examples
ex 1) a goblin a/attack 2 d/defense 1 b/body 1 m/mind 1 so 5 all together then divide by 2 is 2.5 but its a regular so 2xp per kill
ex 2) chaos warrior a4 d4 b3 m3 = 14 / 2 so 7xp per kill
ex 3) stone warrior basically the chaos warrior that had extra defense from a quest a4 d5 b3 m3 = 15 / 2 so 7.5 so its special make him give 8xp per kill
NOTE!!! see 2nd post for undead rule it will be after the 3 and will end with 3 as well for those who want to find it quickly forgot to type this first time around this line was an edit.
Also I have two modes of play with my friends easy/normal or hard/every man for him self basically easy all heroes get same amount of xp no matter who kills the monster/foe as long as they are alive and not dead or unconsicous/ko being under a spell as sleep or something is ok tho. the hard way is only the hero who makes the kill gets the xp. Or you can go with option 3 all who contribute in foe's demise gets xp or splits it.
So thats part I will be adding the leveling up system on next post need a break from typing let me know if you have any feed back yet.