Tip 1: If you're about to run out of seeds, plant your last one in fertile ground to make a new plant, and then harvest a fresh supply of seeds.
Tip 2: Each time you come across a new creature, look at the blank entries in your encyclopaedia to see what you should be trying to find out.
Tip 3: You can use the map to instantly travel between Martian caves if you've run out of a specific seed and need a quick resupply.
Tip 4: Standing next to hydrated Halid Zoa plants is the only way to restore your health, so find one if you're nearly dead.