Upgrade System

NPC which is selling upgrade rune is located in temple on +1 floor.
You can buy upgrade rune and increase stats of your weapons(also wands), equipments, shields.
Table of chance:
Upgrade Level: Chance: Downgrade to:
1 100% 0
2 70% 1
3 60% 2
4 50% 3
5 30% 4
6 25% 5
7 20% 0
8 15% 0
9 10% 0