
Something you should take the time to craft is the High Capacity O₂ Tank, an upgraded version of the Standard O₂ Tank you previously crafted. The speed at which the player ascends is faster than most predators, making this a useful escape tool while in a pinch. The other, more useful way is by allowing Robin to rapidly ascend 100 meters from the ocean floor to the water surface. The first way is by replenishing your oxygen meter with 10 seconds of air. The Air Bladder requires Silicone Rubber and a Bladderfish, and can be used in two different ways. You may have already seen quartz it is a white, crystalline object found on the floors of the Shallow Twisty Bridges. Glass is crafted by combining two Quartz. The Flashlight can help you search for materials in the dark, as the world can be very poorly lit in certain places, especially around night. The Flashlight simply requires a Battery and Glass. One is the Flashlight, and the other is the Air Bladder. While not strictly necessary, there are some other tools you can craft. Once you craft the tank back at the Drop Pod, several more crafting recipes will be unlocked. To use the knife, simply equip it using the number keys and then click Right Mouse Button. Fiber Mesh is crafted using two Creepvine Samples, which can be acquired by using the Survival Knife on a Creepvine in the Arctic Kelp Forest. Its crafting recipe is two Titanium and a Fiber Mesh. The tank increases your total oxygen, allowing you to stay underwater much longer. The third item that is necessary to craft is the Standard O₂ Tank. Once you have everything you need, head back to the Drop Pod to fabricate the knife. It is prudent to harvest as many as you can carry, as you will need more later. Once you make your way there, the seed clusters are bright red bulbs hanging off the tall Creepvines, which resemble real-life kelp. One of the forests can be found in the direction away from the tunnel. Silicone Rubber can be crafted by harvesting a Seed Cluster in the Arctic Kelp Forest. The knife’s recipe is one Titanium and one Silicone Rubber.

The knife allows you to collect certain resources and fight off aggressive life forms should the need arise. The next important item is the Survival Knife. Later on in the game you’ll be able to create a Battery Charger and place it in your base to recharge the batteries you have. If your tool runs out of power, simply craft another battery and replace it by pressing R while holding the tool. Note that it and the Scanner require a charged battery to operate. One very useful piece of technology that can be scanned in the Shallow Twisty Bridges is the Seaglide, which greatly increases your movement speed. Each biome has a different array of fragments. Fragments are broken pieces of technology that litter the floors of many biomes. The Scanner allows you to scan fauna, flora, rocks, and most importantly, Fragments. Once you have all the items you need, return to the Drop Pod to craft the Scanner. The other resources needed for batteries are two Ribbon Plants, which are small, narrow, yellow and green plants generally found in the caves of the Shallow Twisty Bridges. The outcrops also drop Copper Ore, which is required to craft batteries. Titanium can be acquired by breaking open Limestone Outcrops, which litter the floor and walls of many biomes, including the one you are currently in. Its recipe is one Battery and one Titanium. The quickest tool to craft is the Scanner. Note that the speed at which temperature decreases depends on the biome and the current weather.

Temperature, on the other hand, decreases when outside of water and in cold environments. Oxygen slowly runs out at a pace of 1 unit per second (unless your depth is below 100 meters and you don’t have a Rebreather equipped) when underwater and in bases/vehicles without power. Finally, the last two indicators are Oxygen and Temperature. Healing requires the use of First Aid Kits, but health will also slowly regenerate if you’ve refilled your food and water meters enough. Damage usually comes from predatory fauna or flora, though it can also be caused by fall damage and excessive heat. Also present is the health bar, which monitors how much damage you can take before dying. To refill food and water, Robin must eat cooked fish, which can be made using caught fish at a Fabricator, eat Cured Fish, which are made from fish and Salt Deposits, and drink Filtered Water, which can be crafted using Bladderfish. Food and water are two core gameplay threats that need to be managed constantly. At this point, your food bar should be at about half. The exact biome you are now in is the Shallow Twisty Bridges. The path exits into the main area of gameplay, known as Sector Zero.
