Oxygen
Oxygen upgrade allows to extend the duration of Terra and Toxic Class explorations, is quite important when starting, why is that? That's easy, the first level of Mines of Dalarnia is a Terra Class exploration!
Oxygen Upgrades
Grade E
Store more oxygen in your tank and breathe for longer. Used during Terra and Toxic Class exploration.
Equipped at start
Grade E+
Increased the size of your tank and made oxygen preservation less of a struggle. Used during Terra and Toxic Class exploration.
Grade D
Breathe better and improve your oxygen use. Now you won't suffocate... as quickly. Used during Terra and Toxic Class exploration.
Grade D+
Now you don't have to worry about running out of oxygen! ...for a while longer, at least. Used during Terra and Toxic Class exploration.
Grade C
Improve your breathing and use up less oxygen as you travel through the mines. Used during Terra and Toxic Class exploration.
Grade C+
The ventiliation in your suit could use some work. You know, so you don't die. Used during Terra and Toxic Class exploration.
Grade B
Seal the cracks in your suit and keep out dangerous fumes. Helps to contain your oxygen supply for a few seconds longer. Used during Terra and Toxic Class exploration.
Grade B+
Breathe in, breathe out. Be one with the oxygen. Survive for longer. Used during Terra and Toxic Class exploration.
Grade A
Survive in the mines longer. Down with CO2! Used during Terra and Toxic Class exploration.
Grade A+
Survive out in the mines for longer. You now have all the air you need out there. At least, you should. Don't quote me on this. Used during Terra and Toxic Class exploration.
Grade S
Oxygen is at the current Maximum
