Here are some tips for finding and creating oxygen in the early game.
Oxygen Bubbles
You can find these throughout the world, gather them like you would a material, and they will respawn after some time.
Air Tanks & Scrap Heaps
The area where you spawn with all of the drop pods usually has a couple Air Tanks on the ground and Scrap Heaps lying around. These Air Tanks will replenish about 1/3 or more of your air, so look for these and pick them up.
There are also more Scrap Heaps throughout the world shown on the map as a white octagon, always loot these. They contain food, medi, thermo, or oxygen. Save these tanks for when you are desperate and need a big boost to carry you to the next spot.
Gas Blossoms & Air Sacks
Look for Gas Blossom vines, and the Air Sacks that grow off of them. The Gas Blossoms will also drop an Air Sack if you kill them. These Sacks stack in your inventory to use for later but they are organic so they do decompose if you wait too long. Always pick these up when you see them.
Urchin Lungs
Urchins will drop Urchin Lungs which you can take air from so pick those up as well when they drop.
Oxygen Gear
There are oxygen based gear that will help with consumption. Craft these if you are still having trouble with depletion times.
My strat for getting oxygen sorted early
Start your base with the Workbench, add bio generator, refiner, then Oxygenator. Keep the generator full and you will always have a place to go for oxygen replenishment. This is usually the first thing I do when I play, total game changer.
Power Distribution Pro Tip
Your fences can be used to distribute power throughout your base. Any structures touching the same fence as your power supply will be powered by that structure.
Thanks to KM Dave for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.
