Tony Hawk's Pro Skater 3

Completion bonus:
Successfully complete the game with all starting characters to unlock the Skate Heaven level and Private Carrera as a bonus skater.
Information in this section was contributed by Namek.

Hint: Airport: Startle security:
Do a grind on all of security trucks.
Information in this section was contributed by Trentgarfenhagen.

Hint: Airport: Hidden tape:
Go up the ramp at the beginning (not the one behind you), turn up once, and jump over it. There should be a rail. Grind it until you see the tape above you. Then, do a long grind and a 360 Ollie off the rail.
Information in this section was contributed by Mutantfreak88.

Hint: Canada: Summon the ships:
When you start, turn twice until you get to the big piece of wood on the floor. Get enough speed, hold A, and just before you get to the top of the quarterpipe, release A. You should go forward instead of jumping. Do a grind on the bell and the ships will arrive.
Information in this section was contributed by Iguanageek.

Hint: Canada: Hidden tape:
When you start, summon the ships. Then at the place where you start, instead of going forward, go backwards and the ships should be there. Jump and get in the first ship, then jump the ramp and get to the second one. At the end of the second ship should be a quarterpipe. Get on top of it and try to jump and do a grind on the rail. Then, jump to the second rail and the tape should be there.
Information in this section was contributed by Iguanageek.

Hint: Foundry: Hidden tape:
Go to the last ramp when you first start. Go all the way over to the left and get big air. You can grind a silver rail and jump off. The tape will be located there. Do a 50-50 Grind to get down.
Information in this section was contributed by ils0314.

Hint: Foundry: Light the furnace:
Go to the end of the ramp and go right. Turn right again on the second ramp. Head for the ramp and go to the top. When you get there, turn around and grind the three rails (remember to jump in between the rails). Get to the platform and grind the little lever to light the furnace.
Information in this section was contributed by Kwikdawg3.

Hint: Los Angeles: Bring on the quake:
Grind on all the rails in the level, including the wooden ones. Then, go to the first beach hut in the bottom lane. Grind the hut's roof, jump on and grind the wooden rail, then drop on and grind the metal rail below it. The screen will shake.
Information in this section was contributed by AB4Baseball.

Hint: Los Angeles: Hidden tape:
After you bring on the quake, go to the side of the bottom lane where there is a big quarter pipe. Press A + Left at the top to jump over to the other side. Then, go over until you see a broken ledge. Grind on it, then jump up to a platform. Go all the way over to the right to find the hidden tape.
Information in this section was contributed by AB4Baseball.

Hint: Rio: Bring on the music:
Grind on all of the speakers
Information in this section was contributed by Trentgarfenhagen.

Hint: Suburbia: Hidden tape:
Go to where you found the "A" in "SKATE" and get off the ramp to the right. Go until you hit the side of the house quarterpipe and repeatedly press A until you get to the top. Then, get the tape and jump off.
Information in this section was contributed by Kurt Hogg.

Hint: Suburbia: Wake up the neighborhood:
Do a grind on four red cars.
Information in this section was contributed by Iguanageek.