The Bastion is the overgrown jungle stage in Warhammer 40,000: Boltgun 2 that hides five secrets and one Purity Seal. Each collectible sits close to one of the three colored key points you pass through on the way to the exit, so clearing the level to 100% is mostly a matter of detouring at the right moment rather than backtracking later.
Quick answer: The five secrets sit under the Red Key, behind the Red Door, under the Purple Key, under the Yellow Key, and in the cave before the Yellow Key. The Purity Seal is in the right-hand hollow trunk below the Yellow Key.
The Bastion collectibles overview
The level uses three colored key points as landmarks, marked in the world with Greek-letter sigils: the Red Key (Σ), the Purple Key (Φ), and the Yellow Key (Ψ). Every collectible is anchored to one of those points, which makes them easy to track as you move forward.
| Collectible | Reward | Landmark |
|---|---|---|
| Secret 1/5 | Nurgle idol | Directly under the Red Key (Σ) |
| Secret 2/5 | Golden armor skull | Behind the Red Door (Σ) |
| Secret 3/5 | Grenade Boost | Below the Purple Key (Φ) |
| Secret 4/5 | Munitions crate | Below the Yellow Key (Ψ) |
| Secret 5/5 | Glowing pickup | Cave on the way to the Yellow Key (Ψ) |
| Seal 1/1 | Purity Seal | Right hole below the Yellow Key (Ψ) |
Red Key area: Secrets 1 and 2
Secret 1/5 — under the Red Key
From the hub with the three colored key receptacles, head through the lower corridors and use the switches to open the blast doors. Cross the outdoor vine bridge to the Red Key platform.
Once on the Red Key platform, look over the back or side cliff edge below. A glowing golden Great Unclean One idol (Glorgut Bilespew) sits in a caged structure beneath you. Drop down and shoot or strike it to trigger the “SECRET DISCOVERED” message and a +100 Faith reward.
Secret 2/5 — behind the Red Door
With the Red Key in hand, open the red sigil door and move into the overgrown canyon beyond it. On the left, a large mossy tree root rises like a mound. Jump onto it and climb to the top crest.
Waiting at the peak is a glowing golden armor skull pickup. Walk into it to collect the second secret.
Purple Key area: Secret 3
Trace the glowing chevrons through the swamp to the rocky ledge holding the floating Purple Key. Pivot toward the swamp floor below and drop down beside the tangled tree roots.
Beneath those roots is a recessed hollow. Step inside to grab the Grenade Boost, which triggers the “YOU DISCOVERED A GRENADE BOOST!” message.
Yellow Key area: Secrets 4 and 5, plus the Purity Seal
Three collectibles cluster around the final key, so clear them together before you grab the Yellow Key and move on.
Secret 5/5 — in the cave before the Yellow Key
On the cave path that leads toward the Yellow Key zone, watch the left rock wall. A narrow recess is hidden behind overgrown roots. Step into it to collect the glowing pickup, which calls out “Machine Spirit: Praise the Omnissiah!”
Secret 4/5 — under the Yellow Key
In the clearing under the huge face carved among roots and vines, check the cliff base. Push through the thick patch of tall grass and ferns to uncover a hidden munitions crate.
Seal 1/1 — the Purity Seal
From the elevated root ledge near the giant wooden structure below the Yellow Key, line up with the circular openings in the hollow trunk ahead. Sprint and leap across the roots into the right-hand opening to collect the floating Purity Seal.
If you cannot clear the jump, you can drop down from the Yellow Key spot later and still reach the Seal.
Confirming full completion
You can track progress from the on-screen counters while you play. Each secret pickup flashes “SECRET DISCOVERED” and bumps the secret tally, while the Purity Seal shows “YOU DISCOVERED A PURITY SEAL!” The stage is fully cleared once the end-of-level summary reads 5/5 secrets and 1/1 seal.
