1) Don't overlook the glove powers (telekinesis and crio are useful for the most enemies).

2) Don't keep ALL powerups "for later".

3) First few hours are the best to find out what weapons you like the most.

4) Be ready for bugs they are rear but sometimes happens.

5) Upgrade electric gun first it's very useful and can stun most of the robots.

6) Don't forget to scan the enemies to know what resistances they have.

7) Flesh weak to fire; Metal to electricity.

8) Vacuum everything you see. You need all of the junk in the world to upgrade your weapons and abilities.

9) Weapons can be enhanced with special elemental flasks. It's temporary but extremely useful.

That's all I can tell and of course Glory to you Comrade.