Unlock Mini-Game
"Death Tank Zwei" was originally a mini-game that feature on "Duke Nukem 3D" on the Sega Saturn. You can unlock it as a mini-game on "Death Tank" by shooting down the supply plane that drops off the $100 pellets. Use a canon to achieve this.
5 to 10 Gamerscore Points
In "Death Tank" you can unlock achievements and Xbox Live Gamerscore points for completing specific tasks. Fire a full power shot at an enemy for the Hard Shot achievement and 5 Gamerscore points. Nuke two enemies at once for the Cleanup achievement and 5 Gamerscore points. Kill 50 enemies for 10 Gamerscore points and the Veteran achievement.
15 to 20 Gamerscore Points
Fire three accurate shots at your enemy in a row for the Deadeye achievement and 15 Gamerscore points. You must be at a distance at which the shells take more than a second to reach the opponent. Destroy an enemy as you fly upside down for the achievement called The Vice and 20 Gamerscore points. For the same amount of Gamerscore points and The Dex achievement, shoot a tank using an MIRV. Kill a total of 250 enemies in all of your battles to unlock the Elite achievement and 20 Gamerscore points.
25 Gamerscore Points
Kill a total of 5,000 on this game to get 25 Gamerscore points and the Maniac achievement. Receive the rank of Tank Commander for the same number of Gamerscore points and the Tank Commander achievement. Just as with the Deadeye achievement, accurately fire at an enemy with three shots in a row for the Missile Master achievement and 25 Gamerscore points. You must use missiles and be at a distance at which the missiles take at least two seconds to reach your enemy.