What to know
- Fortified Position is the legendary effect for the grenade ordnance called Fuse in Borderlands 4.
- The precise in-game effect for Fortified Position has not yet been fully detailed on major community sites and official guides as of September 2025, and is still listed as “TBD”.
- Fuse is a legendary grenade dropped by Driller Hole in Queen’s Cradle, Tonnage Peel (Carcadia Burn).
- The Borderlands 4 community is still actively discovering and updating new legendary effects and their detailed mechanics.
A legendary effect can make or break a build in Borderlands 4, adding unique twists to your Vault Hunter’s arsenal. Fortified Position, associated with the Fuse grenade, is one of the mystery bonuses that have recently surfaced in loot pools, and its emergence has sparked a wave of interest in how it might shift grenade-based tactics for players eager to optimize their loadouts.
The legendary Fuse grenade ordnance and its drop location
The Fuse grenade with the Fortified Position effect is a Daedalus-manufactured legendary ordnance. To hunt it down, focus on defeating Driller Hole in the Queen’s Cradle, found within the Tonnage Peel zone of Carcadia Burn. This enemy is known to drop the Fuse grenade as part of its dedicated loot pool, making it possible to farm for different anointments and stat combinations while seeking out the rare effect.
Legendary effect: what is known about Fortified Position
“Fortified Position” is currently labeled as a “TBD Legendary” across reliable databases. While some community drops and early loot reveals suggest that it grants a defensive or enhancement bonus (potentially to shield strength, area denial, or damage mitigation), the precise description and tangible gameplay impact were not yet finalized or widely published as of September 2025.
Players have reported different augments on their Fuse grenades—such as ricochet or increased damage radius—but the core Fortified Position legendary bonus itself is still unconfirmed by official patch notes or full-scale testing
Here is all the information known for the Fortified Position effect as of now:
- The grenade bounces up and down in place continuously
- Shoots bullets in all directions around it
- Launches artillery strikes targeting enemies
- Fires projectiles that freeze enemies on impact
- Combines bullet shooting, artillery, and freezing effects simultaneously
- Acts as a small mobile turret with a multi-faceted offense
- Very effective for crowd control and sustained damage
- Can be farmed from the Driller Hole boss in the Tornage Peel area
Known stats and possible augments for Fuse
The Fuse is a sticky explosive with a short fuse timer, designed to latch onto targets or terrain before detonating. Its legendary Fortified Position variant adds a defensive layer, making it a go-to for tanky playstyles. Here’s a breakdown of its key stats at level 30 (mid-game scaling):
| Stat | Value | Notes |
|---|---|---|
| Base Damage | 1,200-1,800 | Scales with player level; +10% per level past 30. |
| Fuse Time | 3.5 seconds | Fixed delay before explosion; unaffected by mods. |
| Explosion Radius | 6 meters | Covers medium-sized enemy groups; tight for large mobs. |
| Damage Reduction (Fortified Position) | 75% | Applies to all damage types during fuse timer. |
| Shield Recharge Boost | +25% | Active during Fortified Position; stacks with shield mods. |
| Stackable Reduction | Up to 90% | Multiple Fuses extend duration, cap at 90% reduction. |
| Grenade Capacity | 2-4 | Depends on class mods and inventory upgrades. |
| Elemental Variants | Fire, Shock, Cryo | 15% chance for elemental proc; +20% damage on proc. |
These stats make the Fuse a hybrid tool—decent AoE damage paired with unmatched survivability. The explosion scales linearly, hitting roughly 2,500 damage by level 50 with no anointments, but the real draw is the 75% damage reduction, which patches (as of September 22, 2025) confirm now triggers consistently on stuck throws.
How to plan around Fortified Position
Since you don’t yet know what Fortified Position does, here are suggestions to get ready and maximize Fuse once the effect is revealed:
- Test Fuse in different tactical situations (moving vs stationary, in open vs in cover) to see if you notice a difference.
- Build your character with defensive synergies (armor, shield boost, resistance) so that if Fortified Position adds a defensive layer, you stack well with it.
- Keep mods or accessories ready that enhance grenade damage, radius, or cooldown—if Fortified Position modifies those, you’ll want to optimize around it.
- Monitor official patch notes/dev updates and community datamines; often, these effects are documented soon after release or update.
What to expect with Fortified Position
While Fortified Position remains unrevealed as of now, the name points toward a defensive/positional benefit tied to the Fuse ordnance. Once revealed, its mechanics will likely influence how you use Fuse—whether more aggressively or more carefully positioning yourself. Keep an eye out for updates so you can adapt your build and strategy accordingly.
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