Agent A: A puzzle in disguise
30 Achievements
69,500 XP
Boing, Boing, Boing
Make a 'Boing' sound 10 times quickly
1,500 XP
3.02%
How to unlock the Boing, Boing, Boing achievement in Agent A: A puzzle in disguise - Definitive Guide
Still giving you an upvote though! :)
Missable
You will get this in Chapter 4. After you have gained Security Clearance Level 1, head through the first door with the blinking green 1 on the panel. Just inside, you'll notice 4 discolored bricks on the left wall.
Interact with this area to zoom in. You need to hit the bricks in the correct order to reveal a hidden staircase.
The order is as follows:
Top right
Middle right
Top left
Bottom left
Bottom right
When the staircase appears, interact with it to head outside. You'll have a split path in front of you - one path leading forward and the other leading right. Take the path leading right.
At the end is a electrical box. On top of the box is a squiggly antenna.
Zoom in on the antenna as much as you can and spam it with . Each time you hit it, it'll make a "boing" sound. You need to hit it 10 times quickly to unlock the trophy.