Mr. Driller Ace Codes -

Quox Ruins level:
Get to the bottom of Soldier Ruins (300 M) in Wonderful Pacteria mode.

Druaga Ruins level:
Get to the bottom of Quox Ruins (500 M) in Wonderful Pacteria mode.

Valkyrie Ruins level:
Get to the bottom of Druaga Ruins (800 M) Wonderful Pacteria mode.

Pacteria Ruins level:
Get to the bottom of Valkyrie Ruins (1,200 M) in Wonderful Pacteria mode.

South Pole level:
Get to the bottom of the Amazon (1,500 M) in Mission Driller mode.

Usagi:
Get to the bottom of the South Pole (2,000 M) in Mission Driller mode to unlock Usagi, the black rabbit. Usagi can be used in the Mission Driller and Grand Prix modes.

Dori Dori Grand Prix:
Finish in first place in the Zaku Zaku Grand Prix.

Zaku Zaku Grand Prix:
Finish in first place in the Hori Hori Grand Prix.