Ori and the Will of the Wisps: How to Hammer Boost

This is a step-by-step guide will help to hammer boost. hope this guide will help you. if you have any other problems. please let me know.

Jump into the air.
Side Attack with Spirit Smash and then immediately cancel the animation by jumping.
Side attack again.
Triple jump only: After you’ve reached the maximum height of your boost, jump and side attack yet again (no need to cancel a side attack the second time).