Warhammer 40,000: Boltgun 2 Guide | All Secrets and Purity Seals in Nurgle Nightmare

The Nurgle Nightmare campaign path in Warhammer 40,000: Boltgun 2 takes you through four levels: Welcome to the Wilds, The Bastion, Festering Bog, and The Vile Root. Each level contains hidden Secrets and one Purity Seal, so you need to explore side passages, shoot hidden switches, and look behind destructible walls to collect everything. 

This guide follows the Nurgle Nightmare route and lists the collectibles in level order. Check the on-screen counters as you go, and finish each level to save your progress.

Welcome to the Wilds: All Secrets and Purity Seal

Welcome to the Wilds contains four Secrets and one Purity Seal. The collectibles are hidden around the jungle paths, waterfalls, explosive barrels, and final arena. 

Secret 1: Grenade Boost Behind the Waterfall

1. At the beginning of the level, drop into the jungle canyon and follow the path toward the green waterfall.

2. Walk through the waterfall to find a hidden alcove behind it.

3. Collect the Grenade Boost.

Secret 2: Machine Spirit Behind a Cracked Wall

1. Continue until you enter the first cave system.

2. Look along the left side of the cave for a cracked stone wall.

3. Shoot the wall to break it open.

4. Enter the hidden passage and collect the Machine Spirit upgrade.

Purity Seal: Spiked Tree Grove

1. Continue until you reach the grove filled with large, spiked trees.

2. Find the central tree with red thorns protruding from its trunk.

3. Jump onto the lowest thorn and climb upward by jumping between the protrusions.

4. Follow the thorns around the trunk and leap onto the outer branches.

5. Grab the floating Purity Seal.

Secret 3: Hidden Cave Near the Fallen Tree

1. Find the stone building surrounded by jungle vegetation.

2. Look through the narrow opening between the building and the cliff to spot an explosive barrel.

3. Shoot the barrel to open a hidden passage.

4. Continue along the main route until you climb the fallen tree trunk used as a ramp.

5. At the top, turn around and enter the cave you opened earlier.

6. Collect the hidden yellow pickup.

Secret 4: Munitions Boost in the Final Arena

1. Continue until you reach the final arena, where allied Death Korps of Krieg soldiers are fighting alongside you.

2. Before completing the encounter, turn left toward the rock wall behind the defensive barrier.

3. Enter the cave tunnel hidden in the wall.

4. Collect the Munitions Boost to complete the level's Secrets.

The Bastion: All Secrets and Purity Seal

The Bastion contains five Secrets and one Purity Seal. Several collectibles are clustered around the red, purple, and yellow key areas, so explore around each key before moving forward.

Secret 1: Golden Nurgle Idol

1. Progress through the lower corridors from the central hub.

2. Open the blast doors using the switches and cross the outdoor vine bridge toward the red key.

3. Once you reach the red key platform, look over the side or back edge.

4. Drop down to the caged structure beneath the platform.

5. Find the golden Great Unclean One idol and hit it to register the Secret.

Secret 2: Golden Armor Skull Behind the Red Door

1. Collect the red key and use it to open the red door.

2. Enter the overgrown canyon beyond the door.

3. Look to your left for a large, moss-covered tree root.

4. Jump onto the root and climb to its highest point.

5. Collect the glowing golden armor skull.

Secret 3: Grenade Boost Beneath the Purple Key

1. Continue through the swamp, following the glowing route markers toward the purple key.

2. Reach the rocky ledge where the key is located.

3. Look down toward the tangled tree roots below.

4. Drop into the hollow beneath the roots.

5. Collect the Grenade Boost.

Secret 4: Munitions Crate Beneath the Yellow Key

1. Continue toward the yellow key and enter the clearing beneath the enormous face carved into the roots and vines.

2. Search the base of the cliff.

3. Push through the tall grass and ferns near the wall.

4. Collect the hidden munitions crate.

Secret 5: Machine Spirit in a Hidden Cave

1. Follow the cave route leading toward the yellow key.

2. Watch the left rock wall for a narrow recess concealed behind overgrown roots.

3. Enter the recess.

4. Collect the Machine Spirit upgrade.

Purity Seal: Hollow Tree Beneath the Yellow Key

1. Find the elevated root ledge near the large wooden structure beneath the yellow key.

2. Look toward the hollow tree trunk with circular openings.

3. Line up with the right-hand opening.

4. Sprint and jump across the roots into the opening.

5. Collect the floating Purity Seal.

If you miss the jump, you can also drop down from the yellow key area and approach the hollow trunk from below.

Festering Bog: All Secrets and Purity Seal

Festering Bog contains four Secrets and one Purity Seal. Most of the collectibles require you to explore beyond bridges, climb machinery, or investigate the lower paths around the purple key.

Secret 1: Emperor's Visage After the Red Bridge

1. Cross the red bridge and enter the clearing on the other side.

2. Follow the glowing route markers up the rocky stairs on your left.

3. Enter the green industrial doorway at the top.

4. Inside the maintenance room, climb onto the crates and pipes.

5. Reach the elevated ventilation ledge and collect the Emperor's Visage.

Secret 2: Skull Emblem Behind the First Bridge

1. Find the console that controls the first bridge.

2. Activate the console to extend the bridge across the bog.

3. Cross to the platform on the other side.

4. Turn right and descend onto the dirt bank surrounding the stone structure.

5. Move behind the pillars and search the rocky bank.

6. Collect the glowing red skull emblem near the outer wall.

Secret 3: Munitions Boon Behind the Industrial Machine

1. Continue toward the red key and cross the metal catwalk into the swamp clearing.

2. Descend toward the pipeline and follow the wooden track to the large industrial machine.

3. Look for the machine with orange spools and winches.

4. Climb onto the crane and jump toward the winch mechanism.

5. From there, leap onto the ledge behind the machine, near a stone pillar.

6. Collect the Munitions Boon.

Secret 4: Grenade Boost Near the Purple Key

1. Continue until you reach the high bridge overlooking the purple key area.

2. Descend to the lower battle platform.

3. Enter the corridor on your right and look for an alcove containing a glowing green wall switch.

4. Activate the switch to lower a tree barrier outside.

5. Return to the bog's edge and jump across the protruding tree trunks.

6. Reach the hollow stump containing the floating Grenade Boost.

Purity Seal: Hidden Room Beside the Purple Key Route

1. Return to the bridge before the purple key.

2. Drop down along the left side of the bridge to reach the lower path.

3. Follow the narrow ledge beside the building's exterior wall.

4. Continue until you reach a secluded alcove behind the structure.

5. Look for a cracked wall and shoot it to open the hidden chamber.

6. Enter the room and collect the Purity Seal.

Collect both the Grenade Boost and Purity Seal before leaving this area, as the lower route is easy to overlook while progressing toward the purple key.

The Vile Root: All Secrets and Purity Seal

The Vile Root contains four Secrets and one Purity Seal. Look carefully around the root-covered passages, toxic depressions, and key areas to find everything.

Secret 1: Machine Spirit Near the Purple Door

1. Follow the main route toward the locked purple door.

2. Before reaching the door, turn right.

3. Search the narrow crevice between the root-covered rock walls.

4. Enter the gap and collect the Machine Spirit upgrade.

Secret 2: Feel No Pain in the Toxic Depression

1. Continue until you reach the narrow path that runs across the large roots.

2. Look over the edge for lower root outcroppings.

3. Carefully drop onto the lower roots and descend into the misty, toxic depression.

4. Follow the lower path to an alcove.

5. Collect the Feel No Pain pickup.

Secret 3: Aura of Doom Behind a Cracked Wall

1. Continue to the courtyard near the red door.

2. Search the corner alcove marked with an Aquila on the wall.

3. Look for an explosive servitor skull tucked into the corner.

4. Shoot the skull to destroy the nearby cracked rock wall.

5. Enter the newly opened passage and collect the Aura of Doom pickup.

Secret 4: Munitions Beacon Beneath the Jump Pad

1. Continue toward the red key until you reach the jump pad used to launch yourself toward it.

2. Do not step onto the jump pad.

3. Instead, move over the right-hand metal edge and drop to the ground below.

4. Search beneath the platform for the Munitions Beacon.

5. Collect the pickup to complete the level's Secrets.

Purity Seal: Ringing the Bells

1. Progress to the bell structure where you collect the purple key.

2. Pick up the purple key suspended above the bridge.

3. Turn around and look upward at the rusted bells hanging from chains.

4. Shoot the hanging bells until you trigger the chime.

5. Turn around and check the path behind you.

6. Collect the Purity Seal that appears.

Final Thoughts

The Nurgle Nightmare path has 17 Secrets and four Purity Seals across its four levels. The most easily missed collectibles are those hidden behind cracked walls, tucked beneath key platforms, or reached by jumping across roots and tree branches.

Before finishing each level, check that your counter shows the required number of Secrets and one Purity Seal. If you miss anything, you can replay completed levels through Level Select instead of restarting the entire campaign.

FAQ

Q. How many Secrets are in the Nurgle Nightmare path?

A. There are 17 Secrets across Welcome to the Wilds, The Bastion, Festering Bog, and The Vile Root.

Q. How many Purity Seals are in Nurgle Nightmare?

A. There are four Purity Seals, with one in each level.

Q. Can you collect missed Secrets later?

A. Yes. Completed levels can be replayed through Level Select, allowing you to return for missed Secrets and Purity Seals.

Q. Which level has the most Secrets?

A. The Bastion has the most Secrets on this path, with five, followed by four each in Welcome to the Wilds, Festering Bog, and The Vile Root.