Tekken 2

* Basic throws can be escaped by pressing the same buttons as the corresponding throw. A LP+LK throw is escaped by pressing LP+LK, and a RP+RK throw is escaped by pressing RP+RK.

* Special throws, as well as back throws, cannot be escaped - use these when in close quarters, but don't abuse them or people (and the CPU) will start ducking under them.

* Ultimate Tackle (Paul, Kazuya) can be escaped with RP+RK. The running tackle cannot be escaped however.

* Some chain throws (Nina, King, Anna, Bruce) can be escaped using certain combinations of LP+RP, LP+LK, LK+RK or RP+RK.

* Non-grab throws also cannot be escaped :
Body Press (Jack-2, P.Jack, Kuma)
Frankensteiner (King, Armor King, Roger/Alex)
Run Up To Drop (Law)
Whirlwind Toss (Wang)
Slow Power Punch Combo (Michelle, Wang)
Machine Gun Cannon (Michelle)
Running Tackle (all)
Attack Reversal (Nina, Paul, Jun, Wang, Anna) - 'Chicken' move was added in Tekken 3 to counter throw

* If Devil or Angel fly in the air to fire their laser (the move being called Devil Blaster aka Flying Killer Beam) and you are close to them, run under them, turn around and perform a back throw when they land. If you are too far away to do this, dash back and hold the stick U/B to perform a large backward jump to clear the laser. Note that timing the jump is important otherwise your character will still be hit by the laser. Note that larger characters like Jack-2 and Kuma will have more difficulty clearing the laser. If the laser is still unavoidable, jumping into the laser without attacking deals less damage than being hit while standing still and will allow you to recover much faster.
* If Devil or Angel perform their Devil Blaster while you are on the ground, press LP to roll to the side just before the laser reaches the ground, this will make you roll out of the way of the laser and you can then retaliate. Note that this can only be done if your character is lying on their back. Some characters such as Kazuya may also be able to sidestep the laser but this is usually more difficult.

* Tekken 2 also has a few bugs in its moves database :
Hammer Punch (Paul, Heihachi, P.Jack). Can be done facing backwards. You can also continue to the Power Punch by following with RP.
Geta Stomping (Heihachi). Can be done facing backwards, opponent must be on ground.
Sledge Hammer (Bruce). Can be done facing backwards.
Face Crushing Knee (Bruce). On Ver.A machines this causes a sound bug against the opponent, who will use another character's voice half way through.
Inferno/Devil Blaster aka Killer Beam (Devil/Angel). Can be done facing backwards (both standing and flying versions).
Special throws (all). Throws like King's Tombstone Pile Driver can be performed backwards by reversing the directional input as though you're facing the opponent, causing the character to grab in the wrong direction.
Dragon Uppercut to Twin Pistons (Kazuya). On Ver.A machines, a Dragon Uppercut can be canceled into a rising Twin Pistons by inputting RP before the uppercut connects. This move is not actually a bug, as it actually has its own animation data specifically for this, however in Ver.B and later games the move and its extra animation was removed.

* Play As Hidden Characters (even if they aren't selectable yet) :
Wang : On the character select screen, highlight Jun/Baek (whoever's default), then press Start, Down, Right, Left, Up
Anna : Highlight Nina, press Left, hold Start, press Right, Left(x2)
Baek (or Jun, if Baek is default) : Highlight Law, press Start, Down, Start(x2), Down, Up
Lee : Highlight Heihachi, press Down, Start, Left, Start, hold Left and press Start
Kazuya : Highlight Heihachi, press Down, Up, hold Up, press Start(x2), release Up, press Up again
P.Jack : Highlight Jack-2, press Down(x2), hold Start and press Up(x2)
Armor King : Highlight King, press Left, hold Start, press Left, Right, release Start, press Right
Ganryu : Highlight Michelle, hold Start, press Down, Up
Bruce : Highlight Lei, press Start(x4) and then Right

For the following characters you have to hold an attack button before entering the character select...
Kunimitsu : Hold LP, then press Start to enter character select, highlight Yoshimitsu, then press Right, Start
Kuma : Hold RP, press Start, highlight Paul, press Down, Start, Down
Alex : Hold RK, press Start, Up(x2)
Roger : Hold LK, press Start, Up(x2)

* Fight Roger or Alex on Stage 4 : On the second/final round of Stage 3, defeat the opponent with less than 5% health (so the announcer says 'Great!'). Roger will appear if your character was selected with a punch button, Alex if selected with a kick button.

* Fight Kuma on Stage 4 : If you have Roger or Alex and do the same thing Kuma will appear instead.

* Each character has a sub-boss (stage 8) depending on who started the game :
If Jun (default) was chosen, Wang will be on stage 8. Baek is in place of Jun if the "New Character" setting is set to 'Baek & Lei'.
If Yoshimitsu was chosen, Kunimitsu will be on stage 8.
Nina : Anna.
Law : Baek or Jun depending on the "New Character" setting.
Heihachi : Lee.
Paul : Kuma.
Jack-2 : P.Jack.
King : Armor King.
Michelle : Ganryu.
Lei : Bruce.
Roger : Alex.
Kazuya : Roger, Heihachi on stage 9 (never Alex on stage 8).
Devil : Heihachi, Jun on stage 9.
If a sub-boss is selected the characters are reversed e.g. selecting Armor King will make King appear.

* Tekken 2 Ver.B introduced some new moves into the game :
Wang : Whirlwind Toss (throw) - d/f+LP+LK+RK
Wang : Dragon Power Punch - b+LP+RP
Armor King : Jump to Capital Punishment - u (or u/f), LP+RP
Armor King : Jump to Burning Double Knuckle - u (or u/f), LP+RP,d (hold)
Armor King : Jump to Moonsault Body Press - u (or u/f), LP+RK
Lee : Silver Cyclone - (while crouching) d+LK+RK
Lee : Blazing Kick - d,d/b+RK (launches opponent on counter hit)
Ganryu : Sumo Popup - b,d/b,d,d/f+1
Ganryu : Take Down - (while fully crouched) d+LP+RP
Kuma : Salmon Hunting - b,f+RP+LK
Kuma : Grizzly Claw - b+LP+RP
Kuma : Rolling Bear - b+LP+RP, clockwise 360 x2
King : 10-Hit Combo ender - Combos ending in LK can now end in LP for an elbow drop; combo ending with Power Bomb can also end with LP or LK

* Some original moves were modified in Tekken 2 Ver.B :
Kazuya : Rising Sun combo was given an extra low sweep and named Roundhouse to Triple Spin Kick - u/f+RK,RK,RK,RK
Ganryu : Thunder Slap move notation was changed - Ver.A is d,d/f+RP, Ver.B is d/f+RP+LK

* One move was completely missing from the arcade versions but exists in the PlayStation home port :
Kuma : Head Butt - RP+RK,B