Here is the full list of all 16 S.W.A.N.: Chernobyl Unexplored achievements.
Finish the game without dying.
Use the code from Secret Digits and get the S.W.A.N. Decoration.
Finish the first Memory Wasteland without the tutorial.
Finish the game.
Find a way out of Patient X's room and solve their mystery.
Find 5 documents about famous Soviet scientists.
Find all the handwritten notes.
Finish the light corridor in time.
In the Shadow Wasteland, walk away from the light.
Lure the spectre into the room using lights.
Do not allow the day to come.
Finish the tutorial for the Nadya Filter.
Finish the tutorial at the first Memory Wasteland.
Find the first Secret Digit.
Walk in the direction of the forbidden corridor.
Solve the mystery after leaving Kaydanovskiy's office.