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The Impulse series, situated within the Stationary Weapons class, are a series of directional anti-personnel mines in Earth Defense Force 2025 and Earth Defense Force 4.1: The Shadow of New Despair. They are used exclusively by the Air Raider class.

Description

The Impulse series are Claymore-like mines which can be set on the ground and detonate when an enemy moves close to them, releasing a spray of projectiles that function similarly to the flechettes of the Air Raider's Limpet Splendor series. Their detection range is described by four laser beams emitted from their front.

Like most other placed objects, they can also be set on vehicles and will adhere to them and move where they move. While dangerous, this can be used to give a vehicle an ersatz short-range defense system.

Strategy

Impulse mines specifically detect the "origin bone" of the enemy's 3D model (the same place the lock-on cursor appears). While this is not a problem for standard enemies, larger enemies such as Hectors generally will not detonate a standard Impulse mine no matter how close they are to it. The mine also only seems to check for detonation if an enemy enters its detection range: deploying a mine too close to an enemy can lead to it failing to detonate unless the enemy exits and re-enters the detection range.

Variants

Base Series

Level Name Number Damage x Shot count Reload (sec) Search distance / Range (m)
0 Y9 Impulse 8 15x20 15.0 40 / 75
7 Y10 Impulse 12 15x40 13.3 45 / 75
30 Y11 Impulse 15 20x40 15.0 60 / 80
48 Y20 Impulse 20 20x40 15.0 60 / 90
76 Y21 Impulse 20 125x40 13.3 80 / 120

Anti-Aircraft Series

Level Name Number Damage x Shot count Reload (sec) Search distance / Range (m)
3 Y9 Anti-Aircraft Impulse 10 20x20 12.0 100 / 300
13 Y10 Anti-Aircraft Impulse 9 22x20 10.0 100 / 300
44 Y11 Anti-Aircraft Impulse 15 40x40 10.0 120 / 400
63 YDX Anti-Aircraft Impulse 10 120x40 11.0 150 / 500

Special Variants

Level Name Number Damage x Shot count Reload (sec) Search distance / Range (m)
21 Y10 Wide Impulse 8 17x40 9.3 45 / 60
71 YDX Strike Impulse 8 80x40 9.3 100 / 600
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