Here is the full list of all 13 Rock Boshers DX achievements.
Collect the Pistol.
Sit through the game load to unlock `CHEESE DREAMS` arcade game.
Collect 5 of each food type to unlock `AQUA KITTY` arcade game.
Collect 10 of each food type to unlock `GHOST PYRAMID` arcade game.
Collect 15 of each food type to unlock `BOSHTEROIDS` arcade game.
Collect all the food pickups.
Collect some coal rockets.
Collect some machine gun ammo.
Collect some steam laser ammo.
Find a hidden area.
Evade the giant worms and make it to the exit.
Get to the planet surface with your new tank.
Complete the game.