Once you've unblocked one of Samos's green eco vents, you can replenish your health at any time by stepping into the eco stream. Always be on the look-out for Power Cells, rare and valuable items which harness incredible energy. They can be earned, found or traded for. You need to acquire as many as possible to access new areas and gain new wisdom. You'll find Precursor Orbs scattered about all over the place. The source of these strange anti-gravity eggs is a mystery, but they are in great demand and can be traded in for Power Cells. Keira sent out a swarm of Scout Flies to gather information on Lurker activity, but the Lurkers captured them and put them in locked boxes. There are seven Scout Flies in each area - release them all to earn a Power Cell.

ECO

Eco is a magical and very powerful substance. It comes in a variety of colours and sizes. These different types of Eco will affect you and your environment in different ways.

Green Eco helps you to recover energy. Collect fifty units of Small Eco or one unit of Large Eco to earn one recover point. If you stand in a Green Eco Vent, your health will be completely restored. Blue Eco is a very powerful substance. It will have an effect on the environment around you and expand your abilities. When you are Powered Up, you can move much faster, and open boxes simply by running into them. Blue Eco is also needed for activating launch pads, opening doors and releasing useful objects from the closed vents that you will find in each area. Red Eco improves the power, and in some cases the range, of your attacks. Yellow Eco lets you shoot fireballs. These are useful for destroying enemies and nasty objects like Dark Eco boxes. Try to avoid Dark Eco boxes at all costs. Your health will suffer if you unleash what's inside them.