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The reliable way to approach Boltgun 2 on Dauntless is to plan around one-time chapter choices, use the navigation guide to sweep every side path, and build Malum Caedo and Sister of Battle Nyra Veyrath differently. The game has hidden collectibles, secret power-ups, optional secret chapters and tougher bosses, but no authoritative room-by-room list of every location or Dauntless value is currently established. This walkthrough gives a complete route, exploration and combat method without inventing coordinates, upgrade costs or boss phases.
Warhammer 40,000: Boltgun 2 released on October 14, 2026. Steam lists Auroch Digital as developer, Big Fan Games and Devolver Digital as publishers, and a $24.99 price at launch; price and review totals can change by region and date. The campaign is single-player, spans several worlds and lets you play as either Ultramarine Malum Caedo or Sister of Battle Nyra Veyrath. Vashtorr the Arkifane is driving the corruption, and your objective is to cross those worlds and cleanse the power feeding his daemonic machine.
What is known about the campaign
The sequel is deliberately larger than the first game. Developer material describes a second playable character, four Chaos factions and multiple difficulty settings. A review of the finished game also reports a broader bestiary, more varied weapons, hidden collectibles, secret power-ups and boss encounters. Those facts matter for route planning: this is not a linear sprint in which one weapon and one character build work everywhere.
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|---|---|---|
| Characters | Malum and Nyra have distinct abilities, weapons and movement styles. | Keep separate priorities for each character; do not copy a Malum build onto Nyra. |
| Chapter selection | Alternating chapters are selected once per playthrough. | Record your choice before confirming it, then plan a replay for the branch you skipped. |
| Secrets | Hidden collectibles and secret power-ups are present, and some choices can unlock optional secret chapters. | Explore side paths before entering the exit trigger or committing to the next chapter. |
| Difficulty | Multiple difficulties include Dauntless. | Expect mistakes to cost more and practise an encounter on a lower setting if a fight is blocking progress. |
How to plan your chapter route
Make the first run a route-finding run
At an alternating-chapter decision, pause and write down the chapter name, the option you selected and any locked door, unusual marker or unexplored branch visible on the map. The choice is not a temporary mission selector: it is limited to one selection in that playthrough. A note prevents the common mistake of assuming you can return immediately for a missed collectible.
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Choose the branch that best matches your goal. If you want a clean first completion, take the path that leaves you with enough ammunition and health to learn the next area. If secrets are the priority, choose the branch with more unexplored side routes and accept that a later run may be required for the other branch. There is no evidence that one character makes a particular chapter universally easier, so base the decision on your preferred movement and weapon handling.
Use replay to open optional chapters
Some route decisions can unlock optional secret chapters. Treat those chapters as a separate completion target rather than trying to force every collectible into one save. On a second run, follow your written route in reverse: select the alternative at each recorded decision, then compare the map and your collectible log with the first run. This is faster and safer than relying on memory.
Choose the character before choosing a build
| Character | Practical identity | Best approach | Main risk |
|---|---|---|---|
| Malum Caedo | Heavier Space Marine approach with a forceful arsenal. | Hold a defensible lane, use his heavier weapons to remove priority targets and finish isolated enemies with the chainsword. | Standing still because his armour feels forgiving; Dauntless still punishes missed movement and unspent cover. |
| Nyra Veyrath | Faster Sister of Battle movement and a distinct weapon set. | Keep moving through the arena, attack from changing angles and reserve close-range tools for a deliberate escape or finisher. | Overextending during a speed advantage and arriving at the next wave without resources. |
Malum: control space, then close
Use Malum to establish a safe firing lane as soon as an arena opens. The shotgun is valuable when a threat reaches your position, while the flamer can deny a doorway or narrow approach. The chainsword is a finisher, not a reason to cross an open room into an unknown wave. After each group, reload, collect drops and check the map before advancing; his slower-feeling movement makes an emergency retreat more expensive.
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Nyra: movement is part of damage
Nyra’s faster movement lets you break enemy aim and change the angle of an engagement. Circle the outer edge of an arena first, identify where you can cut across safely and only then commit to a close-range attack. Do not spend every mobility option to reach the first target: keep one escape route for the next spawn or a boss telegraph. Her distinct arsenal rewards switching weapons by distance instead of forcing one favourite gun to solve every problem.
Navigation and a repeatable secret sweep
The developer provides a navigation guide and map. Use it as a checklist, not merely as a route to the exit. A map reduces backtracking, but it does not remove the need to inspect side rooms, dead ends and unusual geometry where collectibles and power-ups are hidden.
- At the start of a chapter, open the map and identify the main objective, locked routes and any visible branch.
- Move through the obvious path until the first safe pause. Mark every unexplored turn rather than assuming it is decorative.
- Clear the current combat space before searching. A hidden pickup is not useful if an active enemy can interrupt the interaction.
- At each fork, take the side path first when it does not cross the mission exit or a one-way trigger.
- Search behind large objects, around arena edges and beyond dead-end corridors. The existence of hidden collectibles is confirmed, but exact coordinates are not published in an authoritative list.
- Return to the map after collecting an item and remove that branch from your mental checklist.
- Before activating an exit, review the map for unvisited rooms and write the chapter result in your route log.
How to tell a secret is worth a detour
A detour is worthwhile when it ends in a collectible, power-up, weapon resource or a route marker that explains a future branch. It is less worthwhile when it requires crossing a cleared arena with no map change and no unexplored doorway. On Dauntless, clear the room first and make the sweep while your health and ammunition are stable; rushing into a blind corner for a possible pickup is a poor trade.
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Upgrades without an invented tier list
Available sources confirm upgrades and secret power-ups, but they do not establish a complete upgrade catalogue, prices or a universal best order. Do not spend from a guessed spreadsheet. Instead, classify each upgrade when you find it and record four facts: the character, the weapon or ability affected, the resource required and whether the effect is permanent for the campaign or limited to the chapter.
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Priority order for Malum
- Take improvements that let you survive or control a dangerous lane before a small damage increase.
- Value shotgun and flamer efficiency when arenas repeatedly force close quarters.
- Keep a reserve for the chainsword or another emergency finisher rather than emptying every resource on ranged damage.
Priority order for Nyra
- Prefer upgrades that preserve movement, repositioning or close-range survivability.
- Choose ammunition efficiency when your route log shows long stretches between resupply points.
- Do not sacrifice an escape tool for a marginal damage gain; mobility is what allows Nyra to keep attacking safely.
Maintain an upgrade log
Use a simple entry such as Chapter — character — item — effect — cost — permanent or temporary. This prevents buying the same category twice because two icons look similar and makes a replay route more efficient. If an upgrade screen uses different terminology, copy the in-game wording exactly rather than translating it into an assumed tier name.
Dauntless combat fundamentals
Prepare before the arena locks
- Reload every weapon and top up health or ammunition before crossing a conspicuous threshold.
- Identify two retreat lanes and one piece of solid cover. Never let your only escape route pass through the spawn point you are about to trigger.
- Assign a weapon to each distance: a reliable answer for immediate threats, a close-range finisher and an area-denial option such as the flamer.
- Enter with enough reserve to handle a second wave; spending everything on the first target is a common Dauntless failure.
Separate threats by behavior
The finished game contains a wider bestiary and tougher enemies than its predecessor, but published material does not provide a complete enemy-by-enemy Dauntless tuning guide. In practice, sort what you see into three jobs: enemies that rush your position, enemies that pressure you from range and elite or boss targets that demand sustained attention. Remove the threat that limits movement first. A ranged enemy that forces you out of cover can be more dangerous than a nearby weak unit, while a rushing enemy becomes manageable once you have an open retreat lane.
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Move after every exchange
Fire, change position and reacquire the next target. Remaining in one doorway lets a new wave surround you and makes splash damage or a telegraphed attack harder to avoid. Malum can take a more deliberate lane-control approach; Nyra should turn movement into a constant source of safety. If you lose track of the arena, stop attacking for a moment, cross to a known safe edge and restart the priority order.
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Learn the arena before spending resources
On a first attempt, use the opening seconds to identify walls, hazards, resupply points and the direction from which additional enemies arrive. Do not burn your strongest ammunition while you are still discovering whether the encounter is a single wave or a sequence. Once the pattern is clear, repeat the opening with a planned weapon order.
Use boss attempts as information runs
Bosses are confirmed, but exact phases, health values and damage numbers are not documented in the available material. Treat the first attempt as reconnaissance: watch for the visual or audio cue preceding a charge, projectile or arena change; note where you can stand without being trapped; then decide which weapon is safe during that window. On the next attempt, attack only after the cue and keep enough ammunition for the final part of the fight. A guide that promises exact phase timings without an authoritative source is likely to mislead you after a patch or on a different difficulty.
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Vashtorr and the campaign objective
Vashtorr the Arkifane is the antagonist behind the corruption-powered machine. Keep the story objective in mind when a chapter offers a choice: cleansing the machine is the through-line, while branch choices determine which worlds and optional content you see on that run. Do not assume that a story cutscene means the chapter is fully searched; complete the map sweep before taking the final exit.
A two-run completion plan
- Run one: choose one character, record every alternating-chapter decision, collect visible secrets and learn the map without repeatedly reloading a difficult fight.
- Between runs: compare your route log with the chapter list, identify the skipped branch and note which upgrades helped that character most.
- Run two: select the opposite choices, revisit side paths you marked as unexplored and pursue optional secret chapters.
- Dauntless cleanup: once routes are familiar, replay the chapters that caused the most deaths with a deliberate resource plan rather than trying to learn a route and a high difficulty simultaneously.
This approach respects the one-selection-per-playthrough structure and turns replay into a targeted checklist. It also avoids claiming that every collectible can be reached in a single branch when optional chapters may depend on an earlier choice.
What this walkthrough cannot safely list
No authoritative level-by-level database currently establishes every secret location, every upgrade cost or the exact Dauntless tuning for each encounter. Because those values can also change with patches, fabricated coordinates or damage figures would be less useful than a map-based sweep and a written route log. When an in-game label conflicts with a generic description here, trust the current game text and record the difference for your own route.
Quick Recap
Quick completion checklist
- Choose Malum for a heavier, lane-control style or Nyra for faster movement and a distinct arsenal.
- Write down each alternating-chapter choice before confirming it.
- Open the navigation guide at every chapter and clear side paths before the exit.
- Record each secret collectible, power-up and upgrade with its exact in-game name.
- Enter Dauntless arenas reloaded, with two retreat lanes and a reserve weapon.
- On boss attempts, learn telegraphs first and spend high-value ammunition only during safe windows.
- Replay with the opposite route to pursue optional secret chapters and anything the first branch made inaccessible.
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