There are 20 Key Items in Metal Gear Solid V: The Phantom Pain. They are needed for the "Collector" trophy / achievement and can be used to craft new equipment (similar to blueprints).
- 12 of them will come automatically over the course of the story by just beating all missions and important (yellow) side ops
- 2 for getting S-ranks in all missions. There are 12 hard difficulty missions that unlock one key item (extreme, subsistence, total stealth missions) and 38 normal missions + prologue tha
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