S.T.A.L.K.E.R: Call of Prypiat

You will need the SEVA jumpsuit (you will get it in your inventory in any case to advance the story) and all 3 sets of tools from at least one of the technicians to prepare a container for the artifacts from the trophy.

P.S. In Pripyat you can find the last 2 sets of calibration tools (in the old KBO and in the department store). Bring these tools to the technicians and modify the "SEVA" suit you already have after coming to Pripyat to the required number of containers for artifacts (in addition, you will receive the corresponding trophies for collecting tools for Azot and Cardan, since you have already handed them the tools for rough and fine work).

In addition to the suit with 4 slots for artifacts, you still need to find them. The simplest thing is that the snowflake spawns in electrical anomalies (Backwater - "Scar" and "Iron Forest", Jupiter - Anomaly in the parking lot and the room at the Jupiter plant (where the tools are) and the Stone Flower (Backwater - Dredger, caves under the burnt farm and the "Claw" anomaly). Moonlight - either with a small chance in the same places as the "Snowflake" or is available for sale from Beard at the end of the game (subject to choosing the stalkers' side). And the most interesting thing is "Flame" - with a small chance on Backwater in the Burnt Farm, "Boiler", "Circus" or on Jupiter - "Ashes", cement plant, "Bitumen". I advise you not to look for the last 2 pieces of art by location, but buy Moonlight from Beard (to help saves), and we will receive the flame as a reward from Strelok when returning everything to him 3 notes from hiding places.