Match formats
The official page advertises 4v4 matches and ranked formats from 1v1 through 4v4. [1]
Unlocks
Unlockable skills, elimination effects, emotes, titles and items are listed by the developer. [1]
PC bindings
M1 handles charging/throwing; hold E for curve, G for skill, Q for dash and C for slide. Left Alt toggles shift-lock; B opens emotes. [1]