Complete Level 1.

Complete Level 2.

Complete Level 3.

Complete your first round of Level 4.

Shoot the hidden easter egg(hold down FIRE when game is started or hard-reset).

Finish five rounds of Level 4 difficulty.

Finish ten rounds of Level 4 difficulty.

Get a full 500 point bonus.

Get a full six-clip of bullet bonus.

Get the -500 point 'bonus'.

Get the minus-6 bullet 'bonus'.

Survive and finish Level 3 or higher while the game is running really fast(check measured).

Shoot 10 diving ducks in one round. Diving ducks give zero in-game points.

Finish Level 1 without letting a duck eat your bullets.

Finish Level 2 without letting a duck eat your bullets.

Finish Level 3 without letting a duck eat your bullets.

Finish the FIRST round of Level 4 without letting a duck eat your bullets.

Finish Level 1 without letting a duck dive down.

Finish Level 2 without letting a duck dive down.

Finish Level 3 without letting a duck dive down.

Finish the FIRST round of Level 4 without letting a duck dive down.

Shoot all 8 pipes from the left side without shooting any from the right.

Shoot any color pipe twice without hitting another color in the same round.

Shoot any color pipe four times without hitting another color in the same round.

Shoot any color pipe six times without hitting another color in the same round.

Shoot any color pipe all 8 times without hitting another color in the same round.

Shoot every colored pipe at least once in a round.

Shoot 4 pairs of same-colored pipes in one round.

Get a score of 10,000 or more.

Get a score of 25,000 or more.

Get a score of 40,000 or more.

Get a score of 50,000 or more.

Get a score of 60,000 or more.

Get a score of 70,000 or more.

Get a score of 80,000 or more.

Get a score of 90,000 or more.