Campaign: https://www.kickstarter.com/projects/vernaledge/vernal-edge

Demo: https://plusw.itch.io/vernal-edge-kickstarter-demo

It's an action game called Vernal Edge. It's a 2d Metroidvania with combat inspired by Devil May Cry and Kingdom Hearts 2. Aside from juggling, you can slide on the tiles in the level and jump off of walls, which makes moving through levels quickly really fun. And lastly you have an airship and can go to any island you want to in any order, making the progression really open.