Tony Hawk's Pro Skater 2

Master code:
Pause game play, then hold R and press B, A, Down, A, Start(2), B, A, Right, B, Right, A, Up, Left to unlock all cheats. The menu will spin to confirm correct code entry. Note: This may also be done at the main menu.
Information in this section was contributed by Miikrr, danny, and Sean Williams.

Level select and maximum money:
Pause game play, then hold R and press B, A, Left, Down, B, Left, Up, B, Up, Left(2). The menu will spin to confirm correct code entry. Note: This may also be done at the main menu.

Level select:
Pause game play, then hold R and press A, Start, A, Right, Up(2), Down(2), Up(2), Down. The menu will spin to confirm correct code entry. Note: This may also be done at the main menu.

Flight mode:
Pause game play, then hold R and press Left, A, Start, A, Right, Up, Start. The menu will spin to confirm correct code entry. Get some air and hold A to fly or B to hover.
Information in this section was contributed by Miikrr, Timothye89689, and Michael Russell.

Mindy:
Pause game play, then hold R and press A, Left(2), Up, Right, B, A, Start. The menu will spin to confirm correct code entry. Note: This may also be done at the main menu. Alternately, complete all gaps up to Skatestreet.
Information in this section was contributed by Michael Russell.

Spider-man:
Pause game play, then hold R and press Up(2), Down(2), Left, Right, Left, Right, B, A, Start. The menu will spin to confirm correct code entry. Note: This may also be done at the main menu. Alternately, finish the game with 100% completion using thirteen characters, and get all gaps, including the Boston Rooftops.

Spider-Man's Wallcrawl move lasts longer:
Pause game play, then hold R and press Right, A, Down, B, A, Start, Down, A, Right, Down. The menu will spin to confirm correct code entry. Note: This may also be done at the main menu.

Disable blood:
Pause game play, then hold R and press B, Left, Up, Down, Left, Start(2). The menu will spin to confirm correct code entry. Note: This may also be done at the main menu.

Smiley face blood and sparks:
Pause game play, then hold R and press Start, A, Down, B, A, Left(2), A, Down. The menu will spin to confirm correct code entry. Note: This may also be done at the main menu.

Reset time to zero:
Pause game play, then hold R and press Left, Up, Start, Up, Right. The menu will spin to confirm correct code entry. Note: This may also be done at the main menu.

Disco zoom:
Pause game play, then hold R and press Left, A, Start, A, Right, Start, Right, Up, Start. The menu will spin to confirm correct code entry. Note: This may also be done at the main menu. Alternately, Finish the game with 100% completion using eleven characters.

Perfect balance:
Finish the game with 100% completion using any character.

Always have special:
Finish the game with 100% completion using two characters.

10x multiplier (Stud mode):
Finish the game with 100% completion using three characters.

Sim mode:
Finish the game with 100% completion using four characters.

Moon physics:
Finish the game with 100% completion using five characters.

Always zoom:
Finish the game with 100% completion using six characters.

Slow-Nic mode:
Finish the game with 100% completion using seven characters.

Anime mode:
Finish the game with 100% completion using eight characters.

The Shadow:
Finish the game with 100% completion using nine characters.

Fugitive:
Finish the game with 100% completion using ten characters.

Invisible mode:
Finish the game with 100% completion using twelve characters.

Other side mode:
Finish the game with 100% completion using thirteen characters.

Boston Rooftops:
Get a gold in all competitions with thirteen characters.

Note: Some skaters will perform some other tricks. The points may vary. Tricks only work in the default controller setting.

Information in this section was contributed by tek14, Cobrix2, and de Krisse.

Wallride: Ollie (B) while close and parallel to a wall, then press A.
Wallie: Press B while wallriding.

Bonus characters:
Get all the stats to full for Tony Hawk, complete all goals, and get all gold medals to unlock Mindy and Spider-man.
Information in this section was contributed by Carrottop2386.

Pool secret area:
Go to career or free skate mode. Free skate can help you practice. Select the player with the best ollie ability. If you have money, add more points to the boarder's stats. In level select, choose "School II". Skate directly down to the picnic tables. When you are there, skate down and along the wall at the bottom of your screen. Go up the wooden ramp onto the school building. Kickflip onto the next building, then stop. There should be a rail on the roof. You have to grind more than half the rail in order for this to work. A "Open Sez Tc" sign will appear. Go back near the picnic tables. Go through the arrow and into the gym. There is $150 in there.
Information in this section was contributed by KillaWill7.

There is a $100 bill on the high dive in the secret pool area.
Information in this section was contributed by 4eids.

Wind-tunnel secret area:
Grind the propeller on the half-pipe to unlock the "wind-tunnel". It is on the other side of the park and contains the secret tape and some money.
Information in this section was contributed by 4eids.

Hint: Easier specials:
If you cannot remember your character's specials, or want an easier combination of buttons to press, go to "Edit Tricks" after you select your character. You can change you special moves to different button combinations.
Information in this section was contributed by Corey DeGrandcahmp.

Hint: Reveal specials:
If you do not know a characters specials, go to "Edit Tricks" after you select your character. You can see what the specials are set to.
Information in this section was contributed by Corey DeGrandcahmp.

Hint: Finding the skating lines:
Wait at the start for the demos. Most of the demos show lines that may be hard to find.
Information in this section was contributed by Brettmontana498.

Hint: 900+ trick:
This works with most skaters when you do not boost up their stats. Be prepared to do a trick when you go up a vert ramp. When you get up off the ramp, do the trick and immediately press the way you want to rotate ten times. If done correctly, you will do a 900 plus any trick you did. Note: With tricks that contain Up/Left, and Up/Right, you can do a 1080 if you are lucky. When you do this on the Going Down Town gap, you can get a 1260.
Information in this section was contributed by Cobrix2.

Hint: 1980 Ollie:
Enable the "Flight mode" code. Get some air and hover, then hold Left or Right until you stop spinning and release B. The trick should end up as a 1980 Ollie.
Information in this section was contributed by Amanda Lira.

Hint: Easy 900:
To do a 900 or more with any character, go up into the air and press Left or Right repeatedly instead of holding in that direction.
Information in this section was contributed by InflateAPal.

Hint: Faster Ollie:
Enable the "Flight mode" code. While in the air, press in the opposite direction (for example, if you are facing a wall press Back), Down, then the direction you where facing (before pressing the opposite direction) and hold the D-pad. If done correctly, your character will turn around then start to turn around back to his original position and keep spinning faster and faster. You can also spin in the other direction by releasing the D-pad, then pressing the opposite direction. For example, if you are holding Left, release then hold Right. Note: It will take awhile for it to spin around faster, so be patient. It usually takes about two minutes.
Information in this section was contributed by Hyper Gundam.

Hint: Spider-Man: Does What A Spider Can Do:
Press Left, Right, L to do the "Does What A Spider Can Do" move. Spider-Man will get off his board and use his web to get the board back to him.
Information in this section was contributed by ReElBiGfIsH84.

Hint: Easy Sick score:
Enter the options menu and enable "Kid Mode". Enable the master code to unlock the cheat menu, then enable "Perfect Balance". Start the first level and go over to the halfpipe. When you are about to fly into the air, press A + Up, Down, Left, or Right to do a trick that will give you a lot of points. Only hold it for a few seconds or else you will fall and not get all of those points. When you only have about a minute left, go over to the far side of the halfpipe and onto the edge of the screen. Then, do a grind to the left side and do not press anything. You will go around the level area and will fall off at the starting ramp. You should have about 20 seconds remaining. Do it again. By the time you reach the starting ramp again, time should have run out and you should have a very large score.
Information in this section was contributed by Micro500.

Hint: Unlimited tricks:
Enable the "Flight mode" code. While flying, you can do tricks and spin past 900 degrees. You can also do unlimited tricks while flying.
Information in this section was contributed by Micropurple.

Hint: Rodney Mullen: Freestylin':
Do a Casper To 360 Flip and jump. Land on another Casper To 360 Flip and press Down, Up, Right, Left, Right, Up, Down and so on. You will do a trick called Freestylin'.
Information in this section was contributed by Ben Weitzman.

Hint: Boston Rooftops: Jumping around:
Enable the "Level select" and "Maximum money" codes. The Rooftops Boston level will be unlocked. You can go from roof to roof by jumping or using the "Flight mode" code. Note: Do not go off the edge or you will restart.
Information in this section was contributed by David Luke.

Hint: Boston Rooftops: Never fall:
Between the two halfpipes on the extreme top of the level is a square. Grind it (hold the A button or you will fall). Since the game lets the grind button stay in the middle before moving, you will never fall off.
Information in this section was contributed by OmegaAlpha557.

Hint: Skatestreet: Go up stairs:
Find the stairs near the halfpipe. Jump at the wall and you will go up the stairs.
Information in this section was contributed by InflateAPal.

Glitch: New York: Flying body:
Go to the New York level and enable the "Flight mode" code. When you start the level there is a curb along the street to your right. Grind the curb and fall in the direction of the street. Hold B as you tilt and fall to become an upside down hovering body. You can now fly around by pressing A and B, as you would normally with the flight mode code. If you touch the ground you will get your skateboard back.

Glitch: School: Unlimited tricks in one jump:
There is a double rail on a hill in this level. Go to that rail and do the "Kiss The Rail" move. Your character will get stuck, a big drop sign will appear, and the screen will wobble back and forth. You can do unlimited tricks while you wobble. Note: You cannot continue unless you turn off the game.
Information in this section was contributed by GOOBERBOY16.

Glitch: Warehouse: Unlimited tricks:
You can also get stuck on the helicopter with a Big Drop Sign. You can do unlimited tricks here, however you must turn off the game when done.
Information in this section was contributed by David Cheren.

Glitch: Floating skater:
Enter tutorial mode and complete the obstacles. Get to the "collect S-K-A-T-E" obstacle and get all the letters but leave "E" for last. When you grind the rail to get the "E" press B to make it appear as if your skater is floating.
Information in this section was contributed by Simkid92.

Enable the "Flight mode" code. Choose Spider-man as the Pro Skater and select the Warehouse. Then, go to the halfpipe and grind it. Once you get to the edge, fall and hold A. You will float for a while.
Information in this section was contributed by Brenden Pyper.

Glitch: Upside-down skater:
Enable the "Kid mode" cheat and select a character who can do a special trick that involves doing either a backflip or a frontflip. For example, Eric Koston can do an Indy Frontflip by pressing Down, Up, R. Ollie into the air on a flat surface and do your special trick with Kid mode enabled. When you land, jump again quickly and your skater will flip upside-down.
Information in this section was contributed by John Volpicella.

Enable the "Master code" and activate Moon Physics. Select a character that can do a front or backflip. Choose a level and ollie. Just before you land, do a front or backflip, then ollie. If done correctly, you should flip upside-down. Press Up or Down to complete the trick. Note: You will not get any points.

Glitch: Disappearing skateboard:
When skating, if you wipeout your skateboard will disappear. When you start skating again it will reappear.
Information in this section was contributed by JohnnyG.