YOU SAID:
I am going to kill everyone in this room and then myself
INTO JAPANESE
私はこの部屋の誰もを殺すつもりです。
BACK INTO ENGLISH
I am going to kill everyone in this room.
INTO JAPANESE
私はこの部屋の皆を殺すつもりです。
BACK INTO ENGLISH
I am going to kill everyone in this room.
You've done this before, haven't you.