Flare Burst
Earned from Arson Vulpine. On Hunter, ordinary special shots deal 2 / 3, while weakness shots deal 6 / 8.
MISSION FILE / MVR-SWAMP
Bog Snapper is the Maverick boss of Biomechanical Preserve. Use Flare Burst; on Hunter its standard and charged weakness hits deal 6 / 8 damage. Then collect Boulder Bouncer to target Rail Raccoon.

Flare BurstHunter weak hit 6 / 8 charged
Boulder BouncerTargets Rail RaccoonDamage values show what the player weapon deals to this boss. Weakness damage is explicit in v1.00.61 and no longer represented by one multiplier.
Standard and charged special damage apply to non-weakness weapons. The last two columns show the confirmed values when using Flare Burst.
| Difficulty | Boss HP | Special | Charged | Weakness | Weak charged |
|---|---|---|---|---|---|
| Rookie | 32 | 2 | 3 | 6 | 10 |
| Hunter | 64 | 2 | 3 | 6 | 8 |
| Veteran | 64 | 1 | 2 | 3 | 4 |
Earned from Arson Vulpine. On Hunter, ordinary special shots deal 2 / 3, while weakness shots deal 6 / 8.
Boulder Bouncer is the confirmed weakness weapon for Rail Raccoon.
Open next target →1 upgrade, 1 Heart Tank and 0 Energy Tank records are tied to this stage.


X, this upgrade will enhance your buster, allowing you to create rapid repeated shots and reduces charge time.
Open exact map position →
These positions are now plotted on the Biomechanical Preserve interactive map, including all 20 stage chips and the checkpoint route. No empty resource category is rendered when this stage has no matching item.