To get Heavy Bolter, combine Boltgun with Dice Cube, upgrade the base weapon to its maximum state and open a boss-dropped chest. Brother Luca is a direct starting option because he begins with Boltgun.
Identify Heavy Bolter

Heavy Bolter is the evolved weapon, not an alternative name for the starting Boltgun. It turns that firearm into a sustained stream of bolter fire against incoming enemies.
Prepare the Heavy Bolter Evolution Recipe
| Part | Requirement |
|---|---|
| Starting weapon | Boltgun |
| Matching passive | Dice Cube |
| Evolution | Heavy Bolter |
Brother Luca and the Black Templars' Castellan are both associated with the Boltgun route. Malum Caedo, despite starring in Warhammer 40,000: Boltgun, starts this game with a Chainsword. Choose based on the actual starting weapon shown for your champion.
Unlock Dice Cube for Heavy Bolter
Take the D6 Dice weapon to level 6 to unlock Dice Cube. D6 Dice is the weapon used for that objective; Dice Cube is the passive used in the Heavy Bolter recipe.
Do not confuse the objective with a requirement to reach character level 6. Once Dice Cube is unlocked, you still need to obtain it in the run where you want to evolve Boltgun.
Evolve Boltgun into Heavy Bolter
- Acquire or start with Boltgun.
- Keep a passive slot available for Dice Cube.
- Upgrade Boltgun until it is maxed.
- Collect a boss-dropped chest while carrying the matching passive.
If your loadout contains D6 Dice but no Dice Cube, the recipe is incomplete. The same is true if Dice Cube is merely unlocked in your collection rather than equipped. Check those two conditions before replacing other parts of your loadout.
Heavy Bolter's recipe does not use Gauntlet: that passive belongs to Lasgun's Meltagun route.