i think your on about grozni grad you need to knock out the raiden guy and take his body to the lockers and a cutscene will come up after that you have his clothes put them on along with the mask and you then can go to the very east of grozni grad and youll find him during a cutscene
what will it be? loyalty to your country? or loyalty to yourself ? the mission? or your belifs? youre duty to your unit or your personel feelings? Look at what youve lost already! what country deserves this much loyalty!?