Flashbang

This article is about the skill. For the trait formerly named this, see Grand Entrance.

Throw an explosive at the target area, dazing and blinding enemies on impact. Remove stealth and reveal enemies in a larger area around the impact. — In-game description

Flashbang

 

Profession

Engineer (skill list)

Parent skill

  Utility Goggles

Slot

Profession mechanic

Type

Tool belt

Game link

API

30262

“

0.5½  20  

Flashbang

Throw an explosive at the target area, dazing and blinding enemies on impact. Remove stealth and reveal enemies in a larger area around the impact.

 Damage: 279 (1.05)^?

 Damage: 266 (1.0)^?

 Revealed (6s): You cannot stealth

 Blindness (3s): Next outgoing attack misses.

 Daze: 10.5½ seconds

 Number of Targets: 5

 Reveal Radius: 600

 Radius: 180

 Explosion

 Defiance Break: 150

 Range: 900

— In-game description

Notes

Bug:

May not be an available skill for some players, instead just showing a blank, un-activatable skill. Can sometimes be resolved by slotting Sneak Gyro as a Scrapper.

• The effect is affected by blinded, evade, block and invulnerability.

Version history

For a detailed skill history, see here.

Patch	Changes
June 24, 2025	This skill has been reworked and renamed Flashbang. Throw out an explosive shell at the target area. It explodes on impact, dazing and blinding nearby enemies while revealing enemies in a larger radius.
June 25, 2024	This skill now also inflicts vulnerability on enemies.
February 23, 2021	Fixed a bug in which this skill would reveal enemies with aegis. Fixed a bug in which this skill would not reveal downed enemies.
December 03, 2019	Purge Gyro's toolbelt skill has been changed from Detection Pulse to Chemical Field. Utility Goggles' toolbelt skill has been changed from Analyze to Detection Pulse.
October 01, 2019	This skill replaces Purge Gyro's previous tool belt skill, Chemical Field. The radius of this skill has been reduced from 1200 to 900, and its targeting has been improved in large group settings.
July 16, 2019	While scrapper specialization is equipped, Function Gyro now occupies the F5 slot. Guild Wars 2 Wiki note: Detection Pulse has therefore been removed from the game.
July 10, 2018	Reduced the casting time of this skill by 0.25 seconds, and the aftercast has been reduced by approximately 0.3 seconds.
May 08, 2018	The radius of this skill is no longer split between game modes and will now use the greater radius of 1,200 in all modes.
March 27, 2018	Increased the radius from 600 to 1200 in PvP and WvW.
May 16, 2017	Fixed a bug that caused the effect from this skill to incorrectly reflect its radius.
December 01, 2015	Fixed a bug so that the radius of 600 is correctly displayed.
October 23, 2015	Heart of Thorns release: Detection Pulse has been added to the game.