Swarm Bunker Lust Defense Controls & Steam Deck

Swarm Bunker: Lust Defense ships on Steam for Windows with official minimum specs listing Windows 10 64-bit, Core i7, and integrated-class graphics. Many players also run it on Steam Deck and Linux via Proton—the demo drew Community threads about Linux compatibility. This guide documents practical controls for fixed-bunker aiming, weapon swaps, turret deploys, and artillery calls, plus Deck-specific tips. Combat basics remain in How to Play; stage difficulty is unchanged on handheld.

Default control assumptions

001Studio-NSFW describes mouse-driven aiming from a fixed defensive position with keyboard shortcuts for weapon swaps and abilities. Expect:

• Aim / fire — primary pointer or right stick mapped to cursor.
• Weapon swap — number keys or scroll wheel on PC; on Deck, map to bumpers or D-pad in Steam Input.
• Turret deploy / interact — ability key shown in tutorial prompts.
• Artillery call — separate cooldown ability with on-screen indicator.
• Pause / menu — standard Escape or Start equivalent.

Exact key labels appear in the in-game tutorial and Steam Input overlay—this wiki does not invent rebinding menus not shown in public materials.

Mar 13 demo control additions (desktop reference)

Public demo patch notes from March 13 documented quality-of-life inputs that carry into the full Steam release:

• Right mouse button (RMB) — reload for the active firearm; pairs with a reload UI tip near the cursor so you see ammo state without hunting the HUD corner.
• Mouse scroll wheel — cycle machine gun, rockets, and shotgun without reaching for number keys.
• Z — toggle visual-novel dialogue speed in base and story segments.
• Hold Ctrl — skip dialogue quickly when replaying seen lines.

Combat reload feedback matters during dense waves—if you migrated from keyboard-only reload keys, retrain on RMB before attempting Challenge Stages. Scroll-wheel weapon swap conflicts with some menu setups; if the wrong gun selects after scroll, bind number keys as backup per the table below.

Recommended Steam Deck layout

Deck players report Mostly Played on Steam Deck in review filters. For comfortable sessions:

1. Right trackpad — fine aim for rockets on armored targets.
2. Left stick — coarse aim during machine gun swarms.
3. L1 / R1 — machine gun / rocket / shotgun cycle (three weapons, one bumper pair plus tap).
4. L2 — artillery trigger when cooldown ready—align with Walkthrough spike timing.
5. R2 — primary fire hold.
6. Y / X — turret deploy and base interact prompts as shown in-game.

Enable gyro assist for rocket headshots if trackpad fatigue sets in during stage 7+ armor pairs. Lower gyro sensitivity until shotgun panic swaps stay accurate.

Steam Input profile tips

• Create a per-game profile named Swarm Bunker in Steam Gaming Mode.
• Map keyboard numbers 1–3 to weapon slots even if the game also supports scroll—scroll is awkward on Deck.
• Set artillery to a trigger with haptic cue on cooldown reset.
• Add long-press menu for pause to avoid accidental exits during dense waves.

Export the profile after tuning so Proton updates do not reset bindings.

Linux and Proton

The demo Linux thread discussed running under Proton on Steam Deck and desktop Linux. General approach:

1. Force Proton Experimental or Proton 8+ if default fails.
2. Enable Steam Play for the title in Properties.
3. Disable unrelated launch options unless fixing fullscreen—start clean.
4. If video stutter appears during artillery, cap FPS to 60 in Steam settings.

001Studio lists Windows only; Linux is community-supported through Valve’s layer—not an official port. Report new issues on Steam discussions and watch Updates for developer statements.

Visual novel and base sections on Deck

Between combat, visual-novel dialogue uses standard confirm/advance inputs. Map A button to advance text. On desktop, Z toggles dialogue speed and holding Ctrl skips lines—map equivalents on Deck via Steam Input long-press or back buttons if you replay Base Rooms events. Mar 13 demo notes also improved H-scene pacing and reduced dithering on certain animations; controls unchanged but text-advance rhythm feels smoother.

Room resting animations from demo V2 notes trigger in character rooms—use the same confirm binding. Map trigger to skip only if you already read scenes via Unlock Bond & Scenes.

Adult content plays in-engine with the same controls; Steam Adult Only gating applies regardless of device.

Accessibility considerations

• Text box — Community demo threads asked about hiding the text box; check in-game settings each patch for UI toggles.
• Screen shake — Artillery and shotgun produce heavy VFX; take breaks on OLED Deck to reduce eye strain.
• Font size — Use Steam Deck UI zoom if dialogue feels small; combat HUD remains pixel art scale.

Performance expectations

Store listing cites a small install footprint (~300 MB) and modest specs. Deck should hold 60 FPS in most waves; framedrops may occur during artillery plus full turret fire—lower resolution scale in Quick Settings if needed. Performance does not change Best Build priorities.

Keyboard-and-mouse on desktop (reference)

Action	Typical PC input
Aim	Mouse
Fire	Left mouse button
Reload	Right mouse button (RMB)
Weapons	1 / 2 / 3 or scroll wheel
Dialogue speed	Z toggle
Skip dialogue	Hold Ctrl
Artillery	Assigned ability key
Turret	Assigned ability key
Menu	Escape

Desktop players aiming for leaderboard-style clears should prefer mouse for rocket precision on Turrets Tier List weak stages.

Troubleshooting

No input on launch (Linux): Switch Proton version; verify Steam Input is enabled for the game.

Wrong weapon after swap: Rebind to distinct keys; scroll wheel conflicts with menus on some setups.

Artillery fires twice: Check for double-bound triggers in Steam Input.

Deck sleep mid-stage: Disable auto-suspend in Steam OS during long challenge attempts.

Related wiki pages

Topic	Link
Combat loop	How to Play
Stage timing	Walkthrough
Turret deploy	How Turrets Work
Artillery call	Artillery Guide
Upgrade path	Best Build
Meta lists	Tier List Hub
Heroines	Characters
Patch notes	Updates
Review	Review

Return to the Guides Hub for all tutorials.