The sentence says "You was killed by ..." the correct English is "Your were killed by ...."
I'm sorry, english is not my native language, but isn't that correct "You were killed by ..."?
Your English is good

Survival says "You was killed by ..."
It should say "You were killed by ...."
(The English language is crazy anyway by having a different words for 1st person & 2nd person past tense).