Enchantments

Enchantement	Range	Items
Accuracy	2-5%	Weapon
Armor Penetration	4-10%	Weapon
Weapon Damage	3-9%	Weapon
Energy Drain	5-9%	Weapon
Life Drain	5-10%	Weapon
Magic Power	7-9%	Weapon
XXX Damage	+2	Weapon
Bleed Chance	2-3%	Weapon
Crit Chance	2-3%	Weapon
Crit Efficiency	12-25%	Weapon
Spell Energy Cost	-4-7%	Weapon
Fumble	-1-4%	Weapon
Dodge Chance	2-3%	Armors and Accessories
Health	3-10	Armors and Accessories
Energy	3-16	Armors and Accessories
XXX Resistance	2-5%	Armors and Accessories
Health restoration	1-5%	Armors and Accessories
Energy restoration	1-5%	Armors and Accessories
Healing Efficientcy	4-6%	Armors and Accessories
Damage Reflection	2-5%	Armors and Accessories
Fortitude	6-10%	Armors and Accessories
Noise Produced	-5-9%	Armors and Accessories
Vision	+2	Armors and Accessories
Block Chance	2-4%	Any
Block power	2-11	Any
Counter Chance	2-4%	Any

Curses

Curse	Bonus	Malus	Known items
Curse of Gnawmaw	39% Life Drain (on stats sheet 26%)	5% chance to increase Hunger and Thirst each turn.	ring, dagger
Curse of Soulstealer	11-12% Energy Drain (on stats sheet 12-14%)	5% chance to lose 4% max energy each turn.	ring, dagger
Curse of Everfear	6-7 Unholy Damage	5% chance to lose Morale each turn.	ring, axe
Curse of Loudmouth	4-8 Psionic Damage	5% chance to make noise each turn.	ring, greatsword, dagger
Curse of Sufferjoy	14% Crit Chance	5% chance to increase pain each turn.	ring, amulet, greatsword,dagger
Curse of Gorelust	15% Weapon Damage	5% chance to lose 3% Max Health each turn. Kill enemies to reduce the chance.	ring

Notes

1) Different item tier may affect the chance to roll higher max value. Especially on HP and EN.

2) javijuji said "The formula is weird. I've rolled my rings over 300 times. You can get 7 HP and 9 energy or 5 and 11. Seems like they always have to add up to 16. Same thing happens with all the items. You cannot get max hp and max energy. Its a combination of both that always adds up to the same number.".

Credits

1) Me, feindyslappy who compile this enchant list

2)  javijuji (Reddit) who told me the correct max value of  Armor Pen and Acc. Plus, HP/EN formula.

3)  lol (Steam) who told me the correct max value of Crit Efficiency.                                                                   

4)  Hawke: (Steam) who told me the correct max value of Fortitude, Healing Efficientcy, Health and Counter chance.  

5)  Pháp sư cưỡi chim đỏ (Steam) who told me the correct max value of Energy.

6) icyterror7777, who didn't do much but supported me along the way