After failed searching free and simple role-playing system for Teemu I started to plan one myself. It's called Teemu Roleplaying System (TEROS) and it's based on seven basic attributes with initials APEWASH. Plus alcohol as regaining health and stamina. The basic idea is make both attacking and parrying attacks consume stamina which then affects to overall performance. The way armour works is also a bit different than usual. I wish the initial system actually works, but if not it's always possible to tweak something to gain more balanced system.
TEROS will most probably be in the next major version (1.3) with more items and monsters.