as topic says. my whole shadower career(lvl170+) never seen a single crit with the first three strike of assassinate
Keep in mind shadowers dosn't have natural critical like bowmasters or night lords, so yours chance to do 15% critic with SE is 15%. That's mean this is random. OR MAYBE you turn off your critical try this command ~setting criticals on for turn on or ~setting criticals off to turn off