Korean expression from movie [Kill Boksoon]

Korean expression in the movie [Kill Boksoon], which depicts the confrontation between a legendary killer and a contractor murder company.

- She gets in her room with the door close and doesn’t even show up.  (She stays in her room) (방문 닫고 들어가서 코빼기도 안 비쳐.)

- (Literal meaning= He/she is a powerful enemy.)  = He/she’s a tough one. (아이고 강적이다)

- Why aren't you telling me what you want for the contract renewal? (근데 왜 재계약 조건을 말 안 해줄까?)