- "So special"
- — Halo 5: Guardians Official Game Guide
Special weapons are unique weapons hidden in the campaign missions of Halo 5: Guardians. These are weapons that are also featured in War Games simulations and via the requisition system for use in Warzone. Seven campaign missions in the game feature such weapons.
- Open Hand - Found on top of a ledge on the left near where Promethean Soldiers are first encountered.
- Loathsome Thing - Found in a pair on ledges by where the Kraken is first sighted, one on the left and another on the right.
- Blaze of Glory - Found on a ledge by the mission intel pad containing Test Results: Asteroidea 59B, just before the catwalk to Central Control when leaving the assembly bay.
- Talon of the Lost - Upon reaching the second group of Covenant, climb the rocks on the right. The weapon is hidden below the ledge where a weapons crate housing fuel rod cannons is located.
- Pool of Radiance - Before crossing the light bridge that will trigger the second cutscene, climb the rocks on the left and find the weapon against the cliff wall at the back.
- River of Light - Found in the valley where the Warden Eternal is fought, hidden in a crevice on the far end and in the right wall.
- Twin Jewels of Maethrillian - Found in the cave where Cortana leads the Spartans of Blue Team to the Gateway. It is on top of the largest rock pillar on the left path, on the opposite side from where the Phaetons are parked.
- Light of Urs - Found by a ledge after the first bridge and by Kit Pitlimp's dead body and a Covenant data disc housing Kit Pitlimp's Adventure Log 4/4.
- Spitfire - Found on a ledge nearby a terminal with mission intel, after the vacant Ultra Wraith and the first crashed Pelican.
- The Answer - Found in a pair just before the Warden Eternal duo fight, with one on the left of the entrance to the Gateway by a crashed Pelican and the other on the right.
- Didact's Signet - Found on a ledge after the first lift, just before the next section that spawns another pack of Promethean Crawlers.
- White Scar - Found behind burning wreckage to the right in the first site where Covenant and Prometheans are fought.
- Vorpal Talon - Found on a ledge in front of the Alpha Core.
- Twin Jewels of Maethrillian - Found on a ledge overlooking the Epsilon Core.
- The special weapons are also affected by the Famine skull.
- Halo 5: Guardians Official Game Guide Collector's Edition, page 61