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Password: Just start the game.

[edit] Stage 1-1

Walk to the right and destroy the mechs you see along the way until you reach the orange blocks about halfway between the ceiling and the floor that has the white circular machine moving around on it. Destroy it and the next one that appears on the ground ahead. Further on, there will be several platforms spaced upwards toward the ceiling.

Destroy the mechs on them, jump onto the lowest platform and then jump to the orange block. Here's where you'll have to use the Gravity Jump technique, otherwise you'll fall onto the spikes. Walk along the ceiling until you see another mech and a turret on another orange block below you. Destroy them both and continue to the right to enter the second part of stage 1.

[edit] Stage 1-2

Use the Gravity Jump again to fall to the floor and destroy the turret ahead. Jump into the little nook and grab the Armor and Flame powerups. Use the Gravity Jump here and jump downwards once and jump again onto the orange blocks until you see the turret ahead. Wait until the turret fires and then walk over it and destroy it.

Use the Gravity Jump again and walk forward a little until you see the turret on the platform ahead. Jump and fire at it until it's gone and then use the Gravity Jump yet again to hit the second turret from above. Destroy the mech and the turret below you and then the turret to the right. Jump and fire at it until it's destroyed.

You don't have to worry about the turret on the low platform unless you want to get rid of it. You might as well, since they are worth points. =) Destroy the mech below you when it passes under you and then use the Gravity Jump to fall to the floor again. Destroy the turret and then use the Gravity Jump again to get the turret ahead.

Stay on the ceiling and jump down to the platforms below. Further on there will be a large blue mech that's hogging up all the space ahead. Fire at it until it's gone. You may have to back up once or twice so don't hesitate to do so. Stay on the ceiling, grab the Weapon powerup, and trash the two remaining mechs here. Continue to the right to meet the boss.

[edit] Stage 1 Boss

The boss is the pale green piece of mechanical junk that's hanging from the ceiling. It's quite simple to defeat really but you'll have to use your Gravity Jump a few times to avoid getting blasted. The boss has three potential weak points at the middle and one on either side but only when the pink dome appears there.

The smaller pink orb in the center of the boss fires at you after the dome disappears. The dome should always appear in the middle first so wait there and blast it when it appears. It will then appear on either end of the boss and then back in the middle. You can try to hit the dome while it's on one of the sides and then Gravity Jump back down before the smaller orb fires at you.

You should Gravity Jump back down before the dome disappears to be on the safe side since it takes a bit of time to flip over and fall to the ground. If you're patient, you can just wait in the middle for the dome to reappear and blast it there. It should only take about two rounds of firing at the dome to defeat the boss.