Sonic Adventure DX cheats: Items

Crystal Ring:
As Sonic, after you have the Light Speed Shoes, stand in front of the door on the left side where the Crystal Ring is located. Charge up your Light Speed Dash and it should hit the button on the other side of the door. Then, go in and get the Crystal Ring.

Fighting Gloves:
Go to Big's Treehouse as Knuckles. Climb up until you see a ledge, then walk to the end of the ledge. Once there, you will find the Fighting Gloves.
Information in this section was contributed by Christy Glass.

Mission Card locations:

Mission	Character	Location
1	Sonic	Station Square (front of train station)
2	Sonic	Mystic Ruins (top of train depot steps)
3	Sonic	Station Square (hotel pool area)
4	Tails	Mystic Ruins (near train)
5	Knuckles	Station Square (near Casinopolis entrance)
6	Amy	Mystic Ruins (near train station)
7	E-102	Mystic Ruins (near mine cart to the temple area)
8	Big	Station Square (near Twinkle Park elevator and train station)
9	Sonic	Station Square (behind Twinkle Park elevator)
10	Tails	Station Square (hotel lobby)
11	Sonic	Mystic Ruins (near waterfall by train station)
12	Knuckles	Mystic Ruins (in Egg Hornet arena)
13	Sonic	Station Square (Casinopolis entrance area)
14	Big	Station Square (near Twinkle Park elevator and train station)
15	Sonic	Mystic Ruins (near the train station fence)
16	Tails	Mystic Ruins (near cave entrance to Chao garden)
17	Sonic	Station Square (in shop near cul-de-sac)
18	Amy	Station Square (train station)
19	Amy	Station Square (train station)
20	Sonic	Mystic Ruins (in pool of water near Icecap entrance)
21	E-102	Mystic Ruins (near entrance to Final Egg)
22	Big	Station Square (hotel lobby)
23	Sonic	Station Square (near Twinkle Park entrance)
24	Tails	Station Square (near Casinopolis entrance and Ice Key)
25	Knuckles	Station Square (in cul-de-sac, near Town Hall entrance)
26	Knuckles	Station Square (in cul-de-sac, near Town Hall entrance)
27	Sonic	Station Square (in diner near cul-de-sac)
28	Sonic	Station Square (above hotel doorway)
29	Big	Station Square (cul-de-sac)
30	Sonic	Mystic Ruins (near forest temple)
31	Tails	Station Square (on top of train station clock)
32	Knuckles	Mystic Ruins (near the bridge to Angel Island, by Icecap by the entrance to Icecap/Red Mountain)
33	Sonic	Egg Carrier (pool area)
34	Sonic	Egg Carrier (upper deck)
35	Big	Mystic Ruins (near where Knuckles dug for monkey switch
36	Sonic	Egg Carrier (near entrance to Chao Garden/Hot Shelter/Prison)
37	Tails	Mystic Ruins (near mine car to temple)
38	Knuckles	Mystic Ruins (near the ledge where you find the fighting gloves upgrade)
39	E-102	Station Square (secret hotel lobby room above registration desk)
40	Sonic	Mystic Ruins (Tail's workshop)
41	Sonic	Mystic Ruins (forest temple)
42	E-102	Egg Carrier (prison cell)
43	Amy	Egg Carrier (prison cell)
44	Big	Egg Carrier (to the right of the pool area entrance)
45	Sonic	Mystic Ruins (near Sand Hill entrance)
46	Sonic	Mystic Ruins (where Big finds lure power-up)
47	Tails	Mystic Ruins (near Tails's House [on roof])
48	Knuckles	Station Square (atop lamp post in cul-de-sac)
49	Sonic	Station Square (sewer under cul-de-sac)
50	Amy	Mystic Ruins (near Final Egg entrance)
51	E-102	Mystic Ruins (atop forest temple)
52	Big	Mystic Ruins (in Big's hut)
53	Sonic	Mystic Ruins (near Icecap/Red Mountain entrance where Sonic gets Light-Speed Shoes)
54	Knuckles	Mystic Ruins (near forest temple, where Knuckles gets his fighting gloves; go to tip-top of temple and fly towards it
55	Sonic	Station Square (up Twinkle Park elevator and to the left)
56	Knuckles	Mystic Ruins (near train station, behind a tree near fallen rock)
57	Sonic	Mystic Ruins (near entrance to Icecap/Red Mountain, behind a rock on Angel Island)
58	Sonic	Mystic Ruins (at the bottom of the forest temple area ladder)
59	Knuckles	Egg Carrier (pool area)
60	Big	Mystic Ruin (on the train tracks near the station)

Information in this section was contributed by Jonathan Dogey and Astro the Hedgehog.

Sonic
Light Speed Shoes: Sewer in Station Square.
Crystal Ring: Elevator on second floor of hotel.
Ancient Light: On rock near bridge to Angel Island.

Tails
Rhythm Badge: Follow Tikal to past (it is on a pyramid)
Jet Anklet:In the sewer behind Twinkle Park.

Knuckles
Fighting Glove: In the cave near Angel Island.
Shovel Claw: On a cliff behind Big The Cat's house. Go to the Mystic Ruins and go to the ledge where you entered the level. Turn to your right. The Shovel Claw can be found right above Big The Cat's house. They allow Knucles to do an attack similar to Sonic's Homing attack.

Amy
Warrior Feather: Defeat Hedgehog Hammer for the first time.
Long Hammer: Defeat First Place score again.

Big The Cat
Life Belt: In the lake in the cave leading to Angel Island.
Power Rod: In Forest under Big's bed.
Lure 1: In Sewer Behind Twinkle Park.
Lure 2: In a cave in the Forest.
Lure 3: In the Icecap level.
Lure 4: In a prison cell on the Egg Carrier.

E-102 Gamma
Jet Booster: In the Ammunition Room of the Egg Carrier.
Gun Upgrade: In the room opposite the Ammunition Room.

Getting every Emblem:

Sonic: 30 emblems to collect in Sonic's Action Stages.
Tails: 15 emblems to collect in Tail's Action Stages.
Knuckles: 15 emblems to collect in Knuckles Action Stages.
Amy: 9 emblems to collect in Amy's Action Stages.
Big the Cat: 12 emblems to collect in Big's Action Stages.
E-102 Gamma: 15 emblems to collect in E-102's Action Stages.
Adventure Field: 12 emblems to find in Adventure Field.
Mini Games: 10 emblems to collect in Mini Games.
Chao Races: 5 emblems to collect in Chao Races.
Complete the game with all six characters to get 6 emblems.
This brings the total number of emblems that are collectible in the game to 130, including the final one awarded for collecting all of the others.

Train Station Sonic Emblem:
There is a Sonic Emblem in the Station Square Train Station that you can get with Tails. But there is also a way to get it with other characters (except perhaps Big). As you walk in, the Sonic Emblem is right above you. Walk to the train but do not go in. Instead, head right or left. There should be a small ledge, or railing there. Use the ledge to walk to a loft type object. That is where the emblem is located.

Play as Knuckles and go to the other side of Station Square. Go to the hamburger place where the women wanted to make out with the man. There are four trees on each side. Go the right and dig in the middle of the tree to find an Emblem.

Sonic X poster:
After you complete all of Sonic's missions in adventure mode, play mission mode as Sonic. Go to the pool in the hotel where you started off Sonic's story. Go into the pool and start a mission by touching the tag in the pool. The mission is "Collect 100 rings, and go to the poster by the pool". Look closely at the poster to see that it is a picture of Sonic and a brown-haired boy, with the logo for "Sonic X", a new Sonic cartoon show coming soon to FoxBox.
Information in this section was contributed by silver007.