YOU SAID:

i'm going to punch you in the face so hard

INTO JAPANESE

私はあなたをとても激しく顔にパンチします

BACK INTO ENGLISH

I punch you very hard on your face

INTO JAPANESE

私はあなたの顔にあなたを非常に強く打ちます

BACK INTO ENGLISH

I hit you very strongly on your face

INTO JAPANESE

私はあなたを非常に強くあなたの顔にhitりました

BACK INTO ENGLISH

I hit you very strongly on your face