Find 1 key.

Collect 10 Keys.

No more continues remain...

Collect the Grenade Launcher.

Collect the Missile Launcher.

Collect the multi-directional Photon-Gun.

Collect the High-Powered Grenade Launcher.

Complete Level 1.

Complete Level 1 on Hard Difficulty.

Find Secret Room 2.

Complete Level 2.

Complete Level 2 on Hard Difficulty.

Chose the up-ward path at your first crossroad.

Chose the down-ward path at your first crossroad.

Find Secret Room 1.

Complete Level 3.

Complete Level 3 on Hard Difficulty.

Hit a score of 10,000,000 Points.

Defeat the MC, get all 5 Secret Items, and unlock [Turbo Mode].

Survive [You Have Enough Keys!] and take the south exit.

Reach Level 2 in [Turbo Mode].

Defeat The MC in Turbo Mode.