Learn how to get, use, and upgrade the Relentless Boltblaster, a Very Rare Oseram weapon in Horizon Forbidden West, including stats, perks, and ammo types.
The Relentless Boltblaster is a Very Rare Oseram heavy weapon in Horizon Forbidden West, ideal for Corroding enemies with its Explosive Bolts and extra damage. It can be purchased from the Prize Master at The Maw of the Arena for 54 Hunting Medals. To obtain the required medals, complete The Daunt Hunting Grounds with Full Strips on all three stages.
This weapon excels against large machines with high health. Use its Explosive Bolts to stagger enemies and tear off armor, then follow up with Advanced Bolts for quick takedowns.
Relentless Boltblaster Stats
| Bolts | Base | Rank I | Rank II | Rank III | Rank IV | Rank V |
| Impact | 19 | 20 | 22 | 24 | 27 | 31 |
| Explosive Bolts | Base | Rank I | Rank II | Rank III | Rank IV | Rank V |
| Impact | 19 | 20 | 22 | 24 | 27 | 31 |
| Explosive | 17 | 18 | 20 | 22 | 25 | 28 |
| Advanced Bolts | Base | Rank I | Rank II | Rank III | Rank IV | Rank V |
| Impact | – | – | – | 39 | 43 | 49 |
Relentless Boltblaster Perks
- Corroding Enemy Damage — Increases Impact and Explosive damage against enemies in the Corroding State.
- Overdraw Damage — Increases damage dealt when using Overdraw with a weapon.
- Melee Follow Up — Increases ranged damage for a limited time after a successful melee hit.
Relentless Boltblaster Ammo Types
- Bolts — Deals Impact Damage.
- Explosive Bolts — Deals Impact and Explosive Damage.
- Advanced Bolts — Deals Impact Damage.
Relentless Boltblaster Upgrade Materials
Rank I
- Metal Shards — Common Drop from all Machines.
- Braided Wire — Common Drop from all Machines.
- Small Machine Core — Uncommon Drop from small Machines such as the Grazer.
- Medium Machine Core — Rare Drop from medium sized Machines, such as the Scorcher.
Rank II
- Metal Shards — Common Drop from all Machines.
- Braided Wire — Common Drop from all Machines.
- Stalker Stealth Generator — Legendary Drop from Stalkers.
- Elemental Clawstrider Sax Webbing — Rare Drop from Elemental Clawstrider.
Rank III
- Metal Shards — Common Drop from all Machines.
- Braided Wire — Common Drop from all Machines.
- Large Machine Core — Rare Drop from large Machines, such as the Fireclaw.
- Elemental Clawstrider Circulator — Uncommon Drop from Elemental Clawstrider.
- Rockbreaker Mining Claw — Very Rare Drop from Rockbreaker.
Rank IV
- Metal Shards — Common Drop from all Machines.
- Braided Wire — Common Drop from all Machines.
- Rockbreaker Circulator — Uncommon Drop from Rockbreakers.
- Shellsnapper Shell Bolt — Very Rare from Shellsnappers.
- Stalker Primary Nerve — Rare Drop from Stalkers.
Rank V
- Metal Shards — Common Drop from all Machines.
- Luminous Brainstem — Very Rare Drop from the toughest Machines the Forbidden West has to offer, such as the Behemoths and Tideripper.
- Shellsnapper Primary Nerve — Rare Drop from Shellsnappers.
- Apex Behemoth Heart — Very Rare Drop from Apex Behemoths.
- Apex Tideripper Heart — Very Rare Drop from Apex Tiderippers.
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