MGS2 USP Suppressor & Thermal Goggles Locations (Master Collection)

After boss fight with Olga, head over to the stairs and climb the tower. The USP Suppressor will be on the second level (only appears after completing the game at least once. Will not appear on first play-through. The suppressor was not in the original Sons of Liberty PS2 edition. It was later added to the game in Substance and appears in all later editions).

Thermal Goggles are on the third level of the tower. They are there on first play-through. Originally, the thermal display was all red (not multi-colored heat patterns. The colors were changed for Substance).