Every alien that you encounter attempts to escape when it is at low health (exceptions are Mothership aliens and Pirates). Note that while the alien is running away from the current fight, they still attack the player in range that it began battle with. So any high damage aliens could potentially destroy you if you are not paying attention.
- Low health is usually when an alien goes under 20% of their maximum health.
- Note that Cubikon and Ice Meteoroid aliens are Motherships and do not run away at low health.
- Rare as it is, an alien's attack range is increased when at low health and can be mostly be noticed from a running Kristallon or Kristallin.