I will start:
BAROTRAUMA 101 (Steam Early Access version).
Barotrauma’s core gameplay focuses on co-operative crew simulation. For maximum enjoyability, we suggest new players finish the tutorial first and then embark on a co-op mission with friends, as communication is key and the complex in-game systems take some time to master. Single player will be more fun for more experienced players, and the single player and campaign modes are currently still not finalised.
- Expect a lot of trial and error to begin with; operating a submarine is no easy task. The in-game tutorial for each player class will help you get started.
- Captain, Engineer and Mechanic are key roles, so always try to have those accounted for.
- Always communicate with your crewmates! Currently, we encourage using Skype or Discord for voice communication, as the in-game VOIP isn’t yet finalised.
- Some player classes have a special toolbox container in their inventory, with tools important to that class (mechanics get a wrench, welding tool and crowbar, for example).
- There’s a difference between ‘using’ and ‘interacting’ with items. If left-clicking doesn’t work, try pressing E.
Inside the sub
- Familiarise yourself with the sub’s layout. Knowing where to find a diving suit, medical supplies or more oxygen can make or break a mission when crisis breaks out.
- Make sure you’re carrying enough emergency supplies – and make sure to leave some for other players, too.
- The sub needs regular maintenance – keep the machines and devices in good condition to make sure they’re working when you need them.
- Keep the nuclear reactor on automatic mode while not directly using it to prevent most power outages and overheating.
- Autopilot is best to maintain position, manual pilot is the most efficient way to navigate to locations.
- Remember it takes time to speed and slow down your sub, so move carefully! Hitting a wall is a sure way to crack the hull.
- Make sure you don’t wear diving masks or suits in the sub for no reason – it wastes resources, and you may even suffocate if you aren’t careful.
- Oxygen tanks can be refilled at the oxygen generator and battery cells recharged at a recharge dock or a battery.
Outside the sub (ruins & outposts)
- Make sure you bring enough oxygen when exploring a ruin – you don’t want to die carrying a relic back.
- Go out in pairs or groups if possible. Major artifacts take both hands to carry, so you can’t use weapons or other items while carrying one.
- There are sometimes multiple artifacts inside, and a hand-held sonar will point you to the right one. Keep it on passive if you want a map of the surrounding area.
- Bring a plasma cutter to get through thinner walls.
- Bring a harpoon gun to deal with the alien lifeforms waiting to jump out and attack you.
- In campaign mode, you will need to restock at outposts, as your sub does not regenerate supplies.
About hosting servers
Please see this Steam discussion post for detailed information.