Complete the following achievements to unlock Xbox Live Gamerscore
points.
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Camper: Reach 120 seconds in Wave 1 without dying under the
default settings.
Flawless: Complete Wave 1 without dying under the default
settings.
Co-Op: Complete Wave 5 in Xbox Live with another player under the
default settings.
Co-Op Master: Complete Wave 20 in Xbox Live with another player
under the default settings.
High score: Reach first place on the game score board under the
default settings.
Pterodactyl: Defeat a Pterodactyl.
Triple Pterodactyl: Defeat three Pterodactyls in a game under the
default settings.
Versus: Reach rank 5 in Xbox Live Ranked Versus mode.
Wave 5: Reach Wave 5 under the default settings.
Wave 10: Reach Wave 10 under the default settings.
Wave 30: Reach Wave 30 under the default settings.
Wave 100: Reach Wave 100 under the default settings.