Why are the artifacts for the fuel and cooling upgrades so elusive? Means nothing that I can fly to 80m if I can't do anything up there because then I run out of fuel.
Just started w/out any upgrades: Drilled into a vespane gas and only got normals. Then I drilled from a predrilled passage into some vespane, and ignited the geyser. Did it again adjacent to my previous spot. The game says to look for concentrated gas, but didn't see any at all. Also, should a geyser only explode once?