Thanks Dude ! Its not very clear but the sphere disappear for a while when you hear the character voice (I'm glad you "liked" it). This sphere absorbs projectiles so it fills the chaos bar at the bottom (when its full=> voice and statues change color). The sphere reappears when you the chaos bar hit back 0 (slowly degenerates from 100 to 0 after hitting 100%)
You can use a gamepad. Sorry I am french so default controls are french (ZQSD) but you can rebind keyboard keys on options (in main menu not ig sorry).
Sorry for steamVR bug, I forgot to unplug this plugin !
I'm eager to test yours !