In 1-player mode:
A = Attack
S = Activate Hyper Combo
Z = Special 1 (varies by character)
X = Special 2 (varies by character)
Walking = Arrow keys right or left
Dash attack = Double tap right arrow, then push A
Block = Arrow keys up, left, or down
To pause, press the space bar.
Blocking: When you see the shadow of the attack to come, push the directional where the attack is headed to block. For example, a fist to the face ? hit the ?up? arrow (either press once or press and hold ? you will block in the direction last pressed). A low kick? Press (or press and hold) ?down.? You can push the direction in which to block before the hit connects; between the silhouette and the actual hit. Don?t press another directional until the block is successful.
You can change the controls in the pause screen ? press space bar (handy if you are on a keyboard where Z and X are not next to each other).
If you?re finding it too difficult (or too easy) you can tweak the difficulty in the options screen. Trust us, when you max out the difficulty it is very challenging. :)
To unlock 2-player: All you have to do is finish the tutorial. You can hit the space bar to pause and exit at any time back to the title screen.
Continuing a game: You can continue from any chapter you left off on by selecting 1 Player, Story, and selecting the correct chapter from the Chapter Select screen.