KNACK Emerald Medal

Knack Emerald Medal Trophy - Defeated Gundahar's Robot using Massive Knack
After your first playthrough, chapter select will be unlocked. Use it to defeat Gundahar's Robot in chapter 7-5 on easy difficulty with Massive Knack.
Note: You will unlock Emerald Knack once you collect 15 Emerald crystals.
Knack™
store.sonyente...

[@theradioguy2990]

How to select the chapters ? And more ?

[@KimboSliceHater]

Finish the game and you'll unlock chapter select.

[@adammccartney5505]

my dad has all the Knacks

[@fernandacardoso4700]

You mean relics:)