Warhammer Survivors Fidelis Evolution: Purgator Mirabilis

Fidelis evolves into Purgator Mirabilis. Morvenn Vahl's weapon keeps its bolter spray and adds explosive missile salvos in the official designer's description. It is a distinct chain from ordinary Boltgun becoming Heavy Bolter.

Identify the named weapon

The developer calls Vahl's weapon Heavy Bolter Fidelis; the release data shortens its name to Fidelis. This naming overlap is why borrowing Boltgun's Dice Cube companion is a mistake. The separately inspected release evolution table lists Golden Demon for Fidelis, with the base weapon at level 6.

What changes after evolution

Before evolution, the weapon sprays a spread of projectiles and can trigger a miracle that raises its firing rate. After evolution, the Paragon Missile Launcher contributes intermittent explosive salvos as well. The source does not publish a miracle probability, guaranteed activation schedule or numerical firing-rate bonus.

A useful build-reading distinction is therefore continuous bolter coverage versus additional bursts. Do not interpret a short gap between missile salvos as proof that the original bolter attack vanished.

Check the reward requirements

Carry the correct passive, upgrade Fidelis itself and use an eligible chest. No fixed minute is promised for the evolution. The October developer reveal confirms the result and behavior but does not disclose its passive; the later release table supplies that part and remains community data. Morvenn's profile covers her character context without claiming a complete secret unlock walkthrough.