Clear Base 1: Hoggr, the Frozen Star

Clear Base 2: Qat, the Desert

Clear Base 3: Syrinx, the Tropics

Clear Base 4: Lodur, the Forest

Clear Base 5: Urd, the Factory

Clear Base 6: Pholus, the Giant on any difficulty

Finish the game on Hard or higher

Finish the game on Yea Right! difficulty

Beat the game with Rapid set to "off."

Score 100,000 points

Score 500,000 points

Score 1,000,000 points

Max out Hellfire's weapons to the Super Triple Laser.

Max out Hellfire's speed.

Collect a seeker drone.

Collect a shield.

Have maximum firepower, speed, a shield, and a seeker at the same time.

Have 3 Hellfire attacks saved up.

Reach the maximum bonus multiplier.

Reach the 1st boss of Base 1 without pressing left and without dying.

Reach the 1st Base 1 boss using only the X shot, without dying, and with a score over 50,000 points.

Make it to the 1st boss in Base 1 without having fired a shot and without dying.

Wait in the Options menu while "Hard" is selected for about a minute to enable "Yea Right" Level. Now you don't have to beat the game on Hard first!