Sonic Adventure 2 Cheats

Reuse an Animal Multiple Tines in a Chao Garden
While holding your animal, go as close to your chao as possible without giving it to the chao. Then simply drop the animal in front of your Chao. If done correctly the chao will give the same animation as if you handed the animal to the chao, only you can pick the animal up again. This can also be done with chaos drives.

Steam Achievements
Beyond Good And Evil: Clear LAST part in story mode.
Boss Attack: Clear all 3 modes in Boss Attack Mode.
Chao Raiser: Raise all 5 properties of any one Chao up to level 10.
Chao!: Name your Chao for the first time.
DARK!: Clear DARK side in story mode.
Emblem Collector: Unlock 90 emblems.
Emblem Mania: Unlock all 180 emblems.
Heaven or Hell: Raise a HERO Chao and a DARK Chao with your hero and dark characters respectively.
Hello World: Clear stage 1 on either side in story mode.
HERO!: Clear HERO side in story mode.
Karate Master: Beat all your enemies in Super Level in Chao Karate 1P mode.
Level 4!: Play all level 4 stages in Action Race, Treasure Hunter and Shooting Battle.
Mission Complete: Win all A RANKs (5 A RANKs) in any one stage in story mode.
Speedy Racer: Win NO.1 in expert level in kart race.
You Are The Legend: Win A RANK in all stages in Story Mode.

1P Kart Race
Beat Route 101 or Route 280 to open 1 Player Kart Race.

2P Kart Race
Beat either Kart Race Action Stage (Route 101 or Route 280), then beat the other to open 2 Player Kart Race.

All Boss Attack
To unlock the All Boss Attack, you must of completed the Hero Story, Dark Story and the Last Story, it will appear in the 1 player menu, The All Boss attack is a time attack where you face all the bosses from the Hero Story, then Dark Story then finally the Last Story in succession with no breaks.

Alternate way for an 'A' Ranking
Complete a level with every ring collected. If you do this, you should get a 'Perfect' stamp on the Ring Count when you complete the level and a guaranteed 'A' rank.

Chao Hat
To get a hat for your chao go into a garden as Knuckles or Rouge and dig around untill you find one.

Clean Pause
Pause the game and hold X + Y to clear the game of the pause screen. This only works on controller A.

Clone a Chao
You will need 2 memory cards with at least 128 blocks on each. First take the chao you want to clone out on one of the VMUs. The either e-mail yourself a copy (or to a friend) or just copy in the file manager of the dreamcast. The File is Sonic2____VM. Now you have two of the same chao.

Dark Boss Attack
Beat the game with the Dark Side to unlock Boss Attack in 1P Play. Boss Attack is basically a Time Attack to see how quickly you can beat all bosses on the Dark Side.

Hero and Dark Races
Unlock the Hero Garden, the Dark Garden, and beat the all Beginner's Races to unlock two special race modes, Hero Race and Dark Race.

Hero Boss Attack
Beat the game with the Hero Side to unlock Boss Attack in 1P Play. Boss Attack is basically a Time Attack to see how quickly you can beat all bosses on the Hero Side.

Keep Upgrades without Finishing Levels
After getting your upgrade exit the level. After leaving the level go to stage select and go to any level that is easy and quick for you complete. After completing the level the game saves your upgrade.

More Chao Gardens
Raise a Hero Chao to unlock the Hero Garden. Raise a Dark Chao to unlock the Dark Garden.

New Chao Races
Beat all 3 levels of the 4 Beginner Races (Crab Pool, Stump Valley, Mushroom Forest, and Block Canyon) to open Jewel Race and Challenge Race.

New Looks
Beat ALL of a character's missions to get a new look in 2 Player VS Mode.

New Toys for Chaos
1. Beat the 3 Crab Pool Races to win a shovel.
2. Beat the 3 Stump Valley Races to win an elephant watering can.
3. Beat the 3 Mushroom Forest Races to win a rattle.
4. Beat the 3 Block Canyon Races to win a toy car.

Phantasy Star Online Costumes
For Sonic, successfully complete all of his missions (not including ''Cannon's Core''). You will receice a message saying that you have completed all of Sonic's missions and that you have also unlocked a secret costume. Go to versus mode, select your stage or versus type, but before that press right and you will see a diffrent picture of Sonic. Once the versus mode begins sonic's costume will look like the red HUmar from Phantasy Star Online. The code is the same for Shadow, except his costume is a red HUcast.

Unlock Boss Mode
Beat the Hero Side or Dark Side to access Boss Mode as the the side you beat. It will appear under 1-Player Mode and allows you to fight all the bosses from that side in order.

Unlock Diamond & Onyx Chao Races
Win at least one race from each of the Aquamarine, Garnet, Peridot, and Topaz Chao Races to unlock the Onyx & Diamond Chao Races.

Unlock Final Stage
To unlock the Final Stage, Cannon's Core, first beat the Hero and Dark Sides in 1-Player Story Mode. Then the Last Side option will be available in Story Mode.

Unlock Green Hill
To unlock a 3D version of Green Hill, you must collect all 180 emblems in the game.

Win a Chao Radio
To get a raido for your Chao, complete the 4th Dark Race, the 'Angel vs. Devil' race. Once you do this, you should find a radio for your Chao in the Dark Garden.

Win a Chao TV
To get the Chao TV, win the 12th race in the Challange Races. You will find a little TV for your Chao in the Chao Garden.

Win a jack-in-the-box
To get this toy for your Chao, win the 'Pumpkin Group' race. (Challenge Race No.8) After you do this, you'll find a jack-in-the-box in the Chao Garden.

Win a Rocking Horse
To get a rocking horse for your Chao, you must win Hero Race No.4, the 'Devil vs. Angel' race. Once you do this, you'll get a rocking horse for your Chao in the Hero Garden.

Win Chao Ball
To win the Chao ball, you must beat Challange Race #4 in the Chao Races, the ''Small Animal'' race. If you come in first place, you will win a ball for your Chao, and an emblem. You will find the ball in the Chao Garden.

Win Chao Ball for Dark Garden
To win the Chao Ball for the Dark Garden, come in first place in the second Dark Race. You will find a new, creepy looking Chao Ball in the Dark Garden.

Win Chao Ball for Hero Garden
In the Hero Race, win the 2nd race to win a Chao Ball for your Hero Garden.