What to know
- The Hair Trigger challenge is completed in the “Tonight’s Forecast” mission.
- You must have Nightwing on your team before starting the level.
- The required target is an enemy carrying two guns.
- Hit the enemy with Nightwing’s Electric Birdarang to trigger the challenge completion.
If you’re trying to unlock the Hair Trigger Challenge in LEGO Batman: Legacy of the Dark Knight, the process is very straightforward once you know the correct character and enemy to use. The challenge can be completed within a minute of entering the appropriate section of the mission.
How the Hair Trigger challenge works
| Requirement | Details |
|---|---|
| Challenge | Hair Trigger |
| Character Needed | Nightwing |
| Mission | Tonight’s Forecast |
| Chapter Section | Mr. Freeze storyline |
| Required Ability | Electric Birdarang |
| Target Enemy | Dual-wielding gun enemy |
| Difficulty | Easy |
| Estimated Time | 1–2 minutes |
The Hair Trigger challenge requires you to make a specific enemy rapidly fire their weapons. This can only be done by using Nightwing’s Electric Birdarang on a gun-wielding enemy that carries two pistols.

The easiest place to find this enemy is in the Tonight’s Forecast mission found within the Mr. Freeze chapter. Once you reach the combat area containing the dual-gun enemy, the challenge can be completed almost immediately.
How to complete the Hair Trigger challenge
Step 1
Add Nightwing to your active team before launching the mission. The challenge cannot be completed without him because his Electric Birdarang is required.

Step 2
Open the chapter selection menu and navigate to the Mr. Freeze story missions. Select and start Tonight’s Forecast.

Step 3
Progress through the level until you encounter an enemy armed with two handguns. Continue forward until this enemy appears naturally during gameplay.

Step 4
Switch to Nightwing and target the dual-wielding enemy. Use the Electric Birdarang on the enemy. The electrical effect causes the target to rapidly fire both weapons.

Step 5
As soon as the enemy begins firing uncontrollably, the Hair Trigger challenge should complete.

Common mistakes that prevent completion
| Mistake | Solution |
|---|---|
| Using a different character | Switch to Nightwing |
| Attacking the enemy normally | Use Electric Birdarang specifically |
| Defeating the enemy too quickly | Apply the Birdarang effect before defeating them |
| Playing a different mission | Use Tonight’s Forecast |
Once the enemy starts firing rapidly after being shocked, the challenge should register instantly, making it one of the quickest challenge completions in the game.
The Hair Trigger challenge is one of the easiest challenges in LEGO Batman: Legacy of the Dark Knight. Simply bring Nightwing, load Tonight’s Forecast from the Mr. Freeze chapter, find the dual-gun enemy, and hit them with an Electric Birdarang. The enemy’s rapid-fire reaction immediately fulfills the challenge requirement.