I tested backstab with +12 STR -15 CON on th lvl 64 (not using any armor/buffs). against shilen elder lvl 64 (just set karmian, no buffs) doing duels. Missed backstabs: 5/105 (land rate of backstab = 95.24%) Half-Kills: 14/105 (13.33% chances of half-kill with backstab) Critical backstab: 10/100 (100 backstabs landed, and only 10 were criticals, meaning that backstab has 10% chances of doing critical with +12 str, th lvl 64) ------------------------------------------------------------------------------------------------------ So STR influence on backstab crit is bugged https://4gameforum.com/threads/560661/ And land rate of backstab from behind too ( https://4gameforum.com/threads/566669/ ) And probably half-kill shouldnt exist ( https://4gameforum.com/threads/558185/page-6 and https://4gameforum.com/threads/566669/ read the final comments from people) Also a member from official eu ( _URGE_ ) who is adventurer lvl 77, told me that there are no half-kills on pm