The Mageseeker: A League of Legends Story
52 Achievements
GOG
Whispers in the Woods III
Complete the third enemy wave
9.2%
How to unlock the Whispers in the Woods III achievement in The Mageseeker: A League of Legends Story - Definitive Guide
You obviously can revisit it, but if you don't want to, look for the Silverwing at a nest on the left portion of the screen, before the last portion of the wave (at a shrine).
I thought the arenas didn't have Silverwings. I was wrong.
I thought the arenas didn't have Silverwings. I was wrong.