Wiggler is a Deepest Sword secret achievement.
How to Obtain Wiggler Achievement
Bypass the last section with the length 4 sword.
How to Get
- When you get the Lengh 4 Sword, make it to the 4th level of the cavern.
- Then go as forward as you can and there is gonna be a wall.
- Stay as close as you can to the wall and then press M2 (right click).
- Your sword is going to attach on the top of the wall.
- Then try to wiggle around untill you reach it.