Death Tank Zwei:To unlock the Death Tank Zwei, shoot down the supply airplane that drops the $100 pellets using you cannon.Achievements:ACHIEVEMENT – HOW TO UNLOCKTank Commander (25 points) – Achieve the rank of Tank Commander.Hard Shot (5 points) – Shoot an enemy using full power.Revenge (15 points) – Eliminate your killer with your last dying shot.Cleanup (5 points) – Kill 2 enemy tanks with one nuke.The Vice (20 points) – Kill an enemy while flying upside down.The Dex (20 points) – One shot an enemy tank using a straight up MIRV.Deadeye (15 points) – Hit and kill an enemy with 3 shells in a row.Missile Master (25 points) – Hit an enemy with 3 missiles in a row.Jump (15 points) – Fly half the width of the screen and nail the landing in under 5 seconds.Veteran (10 points) – Get 50 on the Total Kills leaderboard.Elite (20 points) – Get 250 on the Total Kills leaderboard.Maniac (25 points) – Get 5000 on the Total Kills leaderboard.