You son of a bitchHere's your birthday beatWe've been waiting for this dayYou son of a bitchCongratulations on finally getting nerfed
착해지다 actually means becoming a good/nice/kind. I won't know for sure since I haven't played the game in a long while, but given spy's notority to snipers and engineers, I'll assume that this is what they're talking about; Korean gaming communities often give bad names for things that are OP or just plain annoying.
