Sniper Elite 4
86 Achievements
86-105h
PS4
Final Reckoning
Complete the Mission
2.9%
How to unlock the Final Reckoning achievement in Sniper Elite 4 - Definitive Guide
Combatting, DISCOKING, and, yodasqua
Story related, cannot be missed
To gain this trophy, simply complete the main objective which is to find the base commander "Adolf Richter" and assassinate him. However, once you find him, you find that someone else has already done the job. With the body is a note attachment saying that Adolf Hitler is on the island checking out the base changing your objective from Adolf Richter to assassinate Adolf Hitler by any means necessary instead. Once assassinated, simply head to the extraction point without blowing your cover as if spotted, the base will go on full alert.
If you want, I also recommend completing the optional objectives as well.
To gain this trophy, simply complete the main objective which is to find the base commander "Adolf Richter" and assassinate him. However, once you find him, you find that someone else has already done the job. With the body is a note attachment saying that Adolf Hitler is on the island checking out the base changing your objective from Adolf Richter to assassinate Adolf Hitler by any means necessary instead. Once assassinated, simply head to the extraction point without blowing your cover as if spotted, the base will go on full alert.
If you want, I also recommend completing the optional objectives as well.
bLaKgRaVy
This is story related and cannot be missed. After you have assassinated Hitler, you need to find your way out of the sub-pen and exfiltrate from the facility. To set a waypoint on your escape point, press 
to open your map and move the cursor over to the checkered flag on the right of the map. Press 
to set the waypoint and follow that to the exit to unlock this achievement.
If you do this all without being detected, you will also unlock “Silent but Violent.”