Ecco The Dolphin cheats and cheat codes for Xbox 360

Achievements:
Complete the following achievements to award the indicated amount
of Xbox Live Gamerscore points.

Undercaves Survival (5 gamerscore points):
Pass the Undercaves without losing a life.

Songs in the Sea (15 gamerscore points):
Find the hidden glyph in Origin Beach ("Never have we heard...").

Sonar User (10 gamerscore points):
Defeat 30 enemies by using the Death Sonar.

Sonar Free (35 gamerscore points):
Reach the Dark Water Level without using the Death Sonar.

Shark Killer (10 gamerscore points):
Kill ten Sharks in a row.

Octopus Avoider (15 gamerscore points):
Go through the Undercaves without getting any damage from Octopus.

Life Saver (10 gamerscore points):
Reach Ridge Water without losing a live.

Game Win 3 (20 gamerscore points):
Finish the game, but do not lose live more than 3 times.

Game Win 2x (10 gamerscore points):
Finish the entire game two times.

Ecco the Hero (10 gamerscore points):
Save the dolphin family in The Lagoon level.

Death Sonar (10 gamerscore points):
Awarded when obtained the Death Sonar.

Big Blue Message (50 gamerscore points):
Find the glyph in Island Zone that tells you to find Big Blue.