From StrategyWiki, the free strategy guide and walkthrough wiki

In this sector, you have to complete four different sections with exactly one health bar. If you get killed, you are sent back to the start. There are no health packs or armor packs to resupply you.

Contents 1 Dimensional Anomaly 2 Abandoned Spaceship 3 Unknown castle 4 Secret Base 5 Secrets

[edit] Dimensional Anomaly

Monsters will stand still, but if you get close enough, they will fly towards you.

[edit] Abandoned Spaceship

Monsters will circle around the platform they are attached to.

Don't touch the spikes, they will instantly kill you.

[edit] Unknown castle

Monsters either go back and forth, or travel in a circle.

[edit] Secret Base

Monsters fly around and bounce off walls. They will occasionally turn towards you.

[edit] Secrets

Try poking the monsters.