Legend

F - Forward
B - Back
U - Up
D - Down
P - Punch
K - Kick
S - Slash
HS - Heavy Slash
QCF - Quarter Circle Forward - D,DF,F
QCB - Quarter Circle Back - D,DB,B
DPM - Dragon Punch Motion - F,D,DF
RDPM - Reverse Dragon Punch Motion - B,D,DB
HCB - Half Circle Back - F,DF,D,DB,B
HCF - Half Circle Forward - B,DB,D,DF,F
[?] - Hold This Direction For A Second or More
(close) - Must be close or next to (preferably) to the opponent in order for the move to work
(OK in air) - This move can be done in the air as well as on the ground.
(in air) - You must already be in the air in order to do this attack.

Basic Commands

Guard - Hold Back or Down Back (for lower guard) while being attacked.
Air Jumps - Jump then Jump again for a second jump. Some characters can use a 3rd jump by hitting Jumping again.
High Jump - Hit Down then Up for a higher jump. You can't double jump out of this but you can air dash.
Dash - Hit F,F or B,B quickly to move in that direction quickly. With most characters, you can hold F after F,F in order to run.
Air Dash - Hit F,F or B,B to dash in the air. This will stop you from using a double jump with characters that can only use one air jump.
Forward Thrust Attack - Hold Forward while hitting a button. This only works with Punch and Heavy Slash. Some characters can use this with Kick also.
Dead Angle Attack - After guarding an attack, hit forward and 2 buttons at the same time to use a counter attack. This takes half of your tension meter.
Dust Attack - S+HS - This breaks lower guards. This attack send the opponent into the air without the ability to block. This is a good time to use those long air combos. Just ram the buttons to see what you can get.
Sweep - D+S+HS - This breaks higher blocks. This attack sweeps down the opponent. You must be holding down when you hit S+HS or you might end up doing a Dust Attack.
Recovery - When you are hit down by an attack, hit two buttons in order to attempt a recovery. This will make your character flip out of the falling animation back into a ready stance. This allows you to block or attack back. If you hold back or forward when you hit the two buttons, you will recover in that direction.
Faultless Defense - Hold P+K while blocking. This will slowly drain your tension meter, but you will receive no damage. Each hit will instead to the damage to your tension meter causing you to lose tension quicker. The opponent will be shoved back more with each hit though. Also, this allows you to block things that you normally couldn't.
Roman Cancel - Hit 3 buttons when in the middle of hitting someone. You attack will cancel and your character will be back to his neutral stance allowing you to hit again. This will take 50% of your tension gauge.
Jump Cancel - This is when you cancel your attack by jumping in the middle of it. All you have to do is find an attack with can be jump cancelled and hit Up in the middle of it.
Counter Hit - This is when you hit the opponent in the middle of one of their attacks. This will stop their attack and they will not be shoved back at all. You will be shoved back 1/4 of the way you normally are when you hit them normally. They will also have twice the recovery time from the attack and you will have half. If you can do a normal gatling combo on the person with the first hit as a counter, the hits that would normally combo together will all count as counter hits allowing you to do much larger combos than before.
Parrying - This is known as the "lightning strike". This happens when your attack hits the opponent's and they both stop each others. Lightning will be created in the area that they hit. The attacks must be on the same level and the character animation's strike pixels must connect. Seeing this is somewhat rare, but if you study each character closely in accordance to a character you want to use, you can learn how to do this almost every time. This is a good way to avoid taking damage since you can do this to pretty much every move.