The grimdark universe ofWarhammer 40,000: Boltgunis known for its fast-paced action, retro visuals, and brutal combat. One of the most thrilling and challenging levels in the game is thePromethium Supplymission. This stage is not only visually distinct, drenched in flames and mechanical decay, but it also tests the player’s reflexes, weapon mastery, and ability to navigate chaotic layouts. Whether you’re a new Astartes stepping into the grim corridors of the Imperium or a seasoned bolter veteran looking for missed secrets, thisBoltgun Promethium Supply walkthroughwill guide you through every key step.
Understanding the Promethium Supply Level
Setting and Atmosphere
Promethium Supply is set deep within a decaying industrial zone, where pipes hiss with pressure and flames lick at the edges of corridors. This level is designed to evoke a feeling of claustrophobia and urgency. The ever-present danger from Chaos forces, combined with narrow passageways and environmental hazards, keeps you on your toes.
Objectives Overview
Your primary mission is to reach the heart of the Promethium facility and disable key production points overrun by heretics. Along the way, you’ll need to:
- Locate power generators and sabotage them.
- Clear multiple waves of Chaos cultists, traitor guardsmen, and daemons.
- Collect keycards or skull runes to unlock access to deeper sections.
- Survive ambushes in choke-point arenas.
Starting the Mission
Initial Gear and Loadout
At the start of the mission, you’re typically equipped with your standard boltgun, chainsword, and possibly a plasma gun or shotgun depending on your previous choices. The boltgun is ideal for dealing with mid-range enemies, while the chainsword is perfect for tight spaces.
First Combat Encounter
As you advance from the landing zone, you’ll be immediately greeted by a group of Chaos cultists. Use cover wisely, as this first room features explosive barrels and stacked crates. Clear them quickly and head toward the north corridor.
Navigating the Industrial Maze
Keycard Access and Environmental Hazards
Progression in Promethium Supply relies heavily on keycard collection. Look for skull-marked corpses and consoles glowing with red or green hues. These typically signal the presence of keycards or switches.
You’ll also need to avoid steam vents and promethium leaks that deal fire damage over time. Move cautiously and time your dashes between safe zones.
Generator Room Ambush
One of the central set pieces of this level is the generator sabotage sequence. Once you interact with the generator control panel, enemy spawns will begin from multiple doorways. Here’s how to survive:
- Use elevation: There are scaffolds and stairwells that give you height advantage.
- Switch to a heavy weapon like the plasma gun or grenade launcher to deal with swarming enemies.
- Don’t forget the chainsword: It’s your panic button for close combat.
After surviving the waves, the area becomes unstable. Proceed quickly to the next sector before collapse.
Mid-Level Challenges and Secrets
Secret Room Locations
Promethium Supply hides several secrets, usually in the form of concealed doors or destructible walls. Here are some to look for:
- Behind a rusted vent near the eastern hallway. Use a melee attack to break it open and collect extra ammo.
- A cracked wall near a yellow-lit junction hides a health station and a secret weapon cache.
- Jump across piping in the upper level to reach a skull-marked platform with bonus armor pickups.
Optional Combat Trials
There are optional rooms marked with chaos runes. Entering these rooms is not necessary to complete the mission but provides intense combat challenges and rare power-ups. Be prepared to face elite enemies such as Possessed Marines or Bloodletters.
The Final Corridor and Boss Arena
Approaching the Furnace Core
As you make your way toward the final section of Promethium Supply, you’ll encounter increasingly aggressive enemy combinations. Expect cultists with flamers, traitor guards with rocket launchers, and fast-moving horrors. Ammo and health pickups become scarce, so conserve your resources.
Boss Encounter: Chaos Sorcerer
The final fight of this level features a Chaos Sorcerer commanding a group of minions. Here’s how to take him down:
- Disrupt the ritual: Interrupt his energy channeling by dealing consistent damage.
- Focus fire: Eliminate smaller enemies first to avoid being overwhelmed.
- Use cover: The arena has broken machinery that can shield you from ranged attacks.
Once the sorcerer is defeated, the level ends in a blaze of destruction as you trigger the facility’s overload sequence.
Recommended Tips and Tactics
Weapon Prioritization
Stick with the boltgun for most of the mission. Its accuracy and stopping power work well in confined spaces. Switch to plasma or rocket weapons only for large mobs or elite enemies. Melee is best saved for emergency moments or when enemies rush.
Map Awareness
Always keep an eye on your mini-map and look for unvisited hallways. Many of the secrets and optional rooms don’t appear on your initial path. Backtracking is encouraged, especially if you’re low on health or ammo.
Sound Cues
The audio design of the level gives subtle cues. Hissing pipes, demonic growls, and alarm sounds can alert you to nearby encounters or traps. Wearing headphones can provide a slight edge in reaction time.
Summary of Key Takeaways
- Keep moving and avoid getting cornered in tight spaces.
- Use magnetic keycards to progress deeper into the facility.
- Search for secret rooms to gain extra supplies and lore.
- Be ready for multi-wave ambushes, especially near generator areas.
- Defeat the Chaos Sorcerer to complete the mission and secure the sector.
The Promethium Supply level inBoltgunis a thrilling test of combat efficiency, map exploration, and survival instincts. With its atmospheric design, relentless enemy waves, and hidden secrets, this mission showcases the best of what the game has to offer. By mastering your weapons, observing the environment, and staying one step ahead of Chaos forces, you’ll walk out of the furnace victorious bolter smoking and armor scorched, as a true servant of the Emperor should.