Deployable Pressure Trap Mechanic — Shadow Tactics: Blades of the Shogun

1. Summary

A deployable pressure trap is a reusable stealth-elimination ability that arms a hidden ground device after a noisy setup, kills the first valid enemy who steps on it, and must be recovered before it can be used again. Its design rewards planned lure paths, isolated activation, and body-concealment placement such as bushes, while explicitly excluding Samurai as lethal targets.

2. Tags

advanceddocumented

3. Design Intent / Job Story

When a patrol route or investigation path can be predicted, I want to deploy a hidden trap and lure one enemy onto it, so that I can remove the target without exposing an operative to direct line-of-sight danger.

4. Role in Gameplay Loop

Converts guard patrol paths and sound-investigation behavior into planned elimination opportunities
Provides a semi-silent kill option that can be staged before the enemy arrives
Creates a setup-and-recovery loop where trap placement, lure timing, and retrieval matter
Links elimination planning to evidence management because the victim may be seen before death or concealed by terrain
Gives the ability owner a way to contribute to coordinated multi-character ambush plans

5. Preconditions

The trap ability is available to the active team and the owner can reach the chosen ground position
The owner is not interrupted, spotted, or threatened during the multi-second setup
The chosen placement point is navigable for enemies and valid for trap deployment
At least one non-Samurai enemy can be routed or lured across the trap trigger point
The trap is currently in the owner's inventory or has been recovered from its previous placement

6. Parameters

Parameter	Value	Type	Notes
Setup duration	A few seconds	duration	Time the owner spends placing and arming the trap before it can trigger.
Setup noise	Audible nearby	sound radius / event	Noise emitted during setup; risky near enemies.
Trigger condition	First valid enemy steps on armed trap	event	Activation rule for the pressure plate.
Valid target classes	Non-Samurai enemies	enum set	Targets that can be killed by trap activation.
Invalid target classes	Samurai	enum set	Targets explicitly excluded from trap lethality.
Death delay	A couple seconds	duration	Time between trap activation and the victim's death; creates witness risk.
Active uses per deployment	1	integer	Trap is consumed by activation until recovered.
Reuse requirement	Physical pickup	interaction	Owner must retrieve the trap before redeployment.
Pre-activation recovery	Allowed	boolean	Owner can pick up an untriggered trap to reposition it.
Concealment placement	In or on edge of bush	placement qualifier	Can cause the victim's body to fall into concealment and disappear.

7. Core Rules

The trap is placed on the ground at a selected valid location and becomes dangerous only after the setup action completes.
Setting up the trap takes several seconds and emits audible noise, so nearby enemies can react before the trap is armed.
Once armed, the trap is not detected by standard enemies before activation.
The first valid enemy who steps onto the armed trap triggers it.
A triggered valid enemy dies after a short delay rather than instantly disappearing from play.
Enemies who see the victim dying or writhing can raise an alarm.
Only one trap use is available per deployment; after activation, the owner must physically recover the trap before placing it again.
The owner may recover an untriggered trap to reposition it.
Placement in or on the edge of concealment such as a bush can cause the victim's body to fall into concealment and be removed from enemy discovery.
Samurai are not valid lethal targets for this trap and require other systems or follow-up actions.

8. BDD Scenarios

Scenario: Arm a trap before a patrol arrives

Given: the owner has the trap available and can reach a valid ground position
When: the player orders the owner to place the trap
Then: the owner performs a multi-second noisy setup
And: the trap becomes armed only after setup completes

Scenario: Lure a valid enemy onto the armed trap

Given: an armed trap is placed on a valid enemy path
When: the enemy steps on the trap
Then: the trap activates on that enemy
And: a non-Samurai enemy investigates or patrols across the trigger point
And: the enemy enters a short dying state before death
And: the trap cannot be placed again until recovered

Scenario: Witnesses react to the delayed death

Given: a trapped victim is visible to another enemy during the dying state
When: the witness sees the victim writhing or dying
Then: the witness raises an alarm

Scenario: Conceal the result with bush-edge placement

Given: the trap is placed in or on the edge of a bush
When: the trap kills the enemy
Then: the victim's body is concealed or removed from discovery
And: a valid enemy is lured onto the trap from a position that causes the body to fall into the bush

Scenario: Recover and redeploy the trap

Given: the trap has been triggered or the player wants to reposition an untriggered trap
When: the owner reaches the trap location and picks it up
Then: the trap returns to the owner's available inventory
And: the player can place it at a new valid location

Scenario: Samurai resists trap lethality

Given: an armed trap is placed on a path used by a Samurai
When: the Samurai steps onto the trap
Then: the trap does not kill the Samurai as a valid target
And: the player must use another system or follow-up plan to resolve the Samurai

9. Edge Cases

An enemy enters the setup noise radius before arming completes and interrupts or exposes the owner
Multiple enemies are lured together, causing witnesses to see the victim before or during death
The trap is placed where enemies cannot path to the trigger point, making the lure fail
The trap triggers in open sight, creating a body or death animation that other enemies can detect
The trap is triggered by an invalid Samurai target and does not produce the expected lethal outcome
The owner cannot safely reach the activated trap to recover it for reuse
Concealment-edge placement is imprecise, causing the victim to fall outside the bush instead of being hidden
A lured enemy abandons investigation before crossing the trigger point

10. QA Notes

Verify setup duration and setup noise consistently expose risky placement near enemies
Verify armed traps remain visually/AI-undetected until activation by standard enemies
Verify only the first valid enemy triggers a deployed trap
Verify the trap cannot be redeployed after activation until recovered by the owner
Verify untriggered traps can be recovered and repositioned
Verify witnesses alarm when they observe the victim during the delayed death state
Verify bush-edge placement hides or removes the resulting body only when the victim falls into concealment
Verify Samurai interaction separately from normal guard interaction
Verify lure abilities and patrol routes can guide enemies onto the trap without direct manual control of enemies

11. Mechanic Dependencies

Stealth Detection System (Enemy line of sight and alarm behavior determine whether setup, victim death, or body evidence is detected.)
Character Ability System (The pressure trap is one ability within the broader character ability framework and depends on ability selection, targeting, and execution.)
Body Manipulation Mechanics (The trap creates a body/evidence problem unless placement or follow-up body handling conceals the victim.)
Enemy Type Hierarchy (Enemy type rules distinguish normal valid targets from Samurai, who are excluded from trap lethality.)
Shadow Mode Coordination System (The trap can be part of timed multi-character ambush plans, especially when lure, concealment, and follow-up actions must occur together.)
Sound-Based Distraction Abilities (Sound-based lure behavior is the primary way to route enemies onto the trap without exposing the owner.)

12. UI Links

Bottom Gameplay HUD Bar - The bottom gameplay HUD hosts the selected character's ability controls and therefore frames access to the deployable trap during normal play.
Ability Command Bar - The ability command bar exposes the trap command as an actionable ability slot and communicates whether it is available for placement or unavailable until recovered.
Enemy Vision Cones - Enemy vision cones are essential feedback for choosing trap setup locations, avoiding witness lines, and planning lure paths.
Detection Feedback Overlay - Detection and alarm feedback communicates failures caused by noisy setup, visible death states, or discovered evidence.

References

1.
Steam Community :: Guide :: Shadow Tactics: Full Character Guides and Tricks (L34-39 of 116)
2.
Steam Community :: Guide :: Shadow Tactics: Full Character Guides and Tricks (L39-44 of 116)
3.
Steam Community :: Guide :: Shadow Tactics: Blades of the Shogun 101 (L37-40 of 101)
4.
Shadow Tactics: Blades of the Shogun (L14-16 of 52)
5.
The Art of Shadow Tactics Blades of the Shogun and STRATEGY GUIDE (L3935-3951 of 4930)