Basics
Hold back to block, and down-back to block low. Jump-ins have to be blocked standing. Light, Light, Light chains, and so does Light, Light, Heavy.
Heavy and Power
Up + Heavy launches, down + Heavy sweeps, and forward + Heavy up close throws. Power + a direction gives every fighter a second power. Super fires when the meter under your health is full.
Air combos
Light, Light, Light, Heavy, Up + Heavy launches. Hold up to super jump after them, then Light, Light, Light, Heavy spikes them into a ground bounce. Jump again in the air to double jump; double-tap a direction in the air to air dash.
Support
Assist calls your partner in for one big move, even in the middle of a combo. The ring by your name shows when they're ready again.
Touch
Left thumb: the stick appears wherever you press. Flick twice to dash. Right thumb: the Marvel diamond. Light left, Medium top, Heavy right, Launch bottom, and Partner beside it. Tap the II button under the timer to pause, or tap the timer itself.
Keyboard
Move with WASD or the arrows, and double-tap to dash. Light J or Z, Heavy K or X, Power L or C, Super I or V, Assist O or B. Esc pauses.
Versus
Player 1: WASD, then F, G, H, T, and Y for Assist. Player 2: arrows, then comma, period, slash, right Shift, and the quote key for Assist.
Gamepad
A Light, B Heavy, X Power, Y or RB Super, LB or a trigger Assist. Start pauses.