Contra code is bugged. After you pretty much finished all of the other achievements, just press BA. It seems like it just tracks if you've pressed the arrow keys, and not if the arrow keys are pressed in order.
Navy isn't working right because your ships fire their rockets downwards while the enemies fire their rockets at targets. You have to use strikes to kill their ships.
Also, since the panzer and copter shots angled downwards, they were more useful than dragon shots etc. since if it missed, it still went downwards and maybe hit another enemy.
A little too easy. I stopped healing my units, hoping they'd die so I could get more exp, but even without health upgrades, my units just wouldn't die.
[ Faster game play = Code: Looney ] [ Unlimited ammo = Code: Bin ] [ All weapons = Code: Rackem ] [ Level 20 = Code: Adiosturdnuggets ] [ Unlimited rage = Code: Prime ] [ Invincibility = Code: Trashly ] Repost this if it is near the bottom
 "Dodge"){kind=icon}
 "MindScape"){kind=icon}
 "Factory Balls 2"){kind=icon}
 "The Necronomicon"){kind=icon}
 "Achievement Unlocked"){kind=icon}
 "Battle Gear"){kind=icon}
 "The Codex of Alchemical Engineering"){kind=icon}
 "Kingdom of The Wind"){kind=icon}
 "Rage 3"){kind=icon}
 "Feudalism II"){kind=icon}
 "Mytheria"){kind=icon}
 "Ether War"){kind=icon}
 "Chronotron"){kind=icon}
 "Battalion: Nemesis"){kind=icon}
 "Johnny Rocketfingers"){kind=icon}