Minecraft: Xbox 360 Edition

Hi all,
This will be a guide to get all 6 new achievements in the aquatic update in about 5 minutes of actual work, along with an hour of idling. In the main menu, press play and create a new tutorial world by selecting “play tutorial”. Upon starting the world, you will need to walk forward a bit and press “B” every time a tutorial box appears to skip it. Open the inventory and eat the meat to regain full health. Keep walking straight ahead for a while until you reach a giant diamond pickaxe. When underneath it, turn left and head up the stairs and through the gate. There is a chest there, grab the raw cod (fish) from the chest and head back to the pickaxe. Now turn left again upon reaching it to go to the new aquatic bit from the update. Before you do there should be a few little houses on your right hand side; acquire a bed from one of them. Now, keep walking straight ahead and jump in the water. There are a few trampolines in the water, with dark green dried kelp blocks next to them. Get 1-2 of these blocks (you destroy them quicker when you are not in the water). Afterwards, dive down to get some kelp leaves (long vertical plants) as well as feeding the raw cod to one of the many dolphins swimming around to unlock ECHOLOCATION.

Next, we will need a furnace, which can be found on the right hand side on the shore, looking in the direction you came from. In this furnace, place the kelp blocks as fuel and the kelp leaves as ingredient. This will unlock alternative fuel. Now wait for a kelp block to dry and retrieve it, to allow you to eat it. From now on, don’t eat anything else but dried kelp leaves, as your 3 full days of idling for CASTAWAY have started now.

Next, we will create the conduit, by heading to the center of the lake. Grab the all items from the chest. Open the crafting table located in the floor next to the chest. Go to the “Mechanisms tab”, in here go one square to the right and then one down to find the conduit (beneath the beacon). Craft it. Next, head into the center of the water here, right beneath you, there will be the conduit set up ready. Place the conduit on the wooden block, then remove the wooden block with the axe you got from the chest. This will unlock MOSKSTRAUMEN.
With the axe still in your hand, head to the bottom of the lake to find 4 seapickles (green plant with a blue bit at the top). On various spots there are already 4 on one block, if destroying those with the axe, you should be able to pick all 4 up pretty quickly. Place 4 of them back on a single block on the floor to unlock 1 PICKLE, 2, 3, 4.

Now head back to the conduit, sit right next to it and let your console idle for 20 minutes to unlock sleep with the fishes (unlocks after spending 20 minutes under water). The remainder of the time you can partly skip by sleeping (during nights and thunderstorms) (unlocks after eating nothing but dried kelp leaves for 1 hour, reduced by the amount you spent sleeping). CASTAWAY

Grats on your completion!

Easiest way that works as of June2020. Load up a tumble game under mini games on main menu. Don’t ready up. Find a pool of water to fully submerge yourself in for 20 minutes and voila the achievement will pop.

Hi all. I found a video that was very helpful to complete this dlc and very easy.
I did not fully read the Itzz Sh0wt1m3 user guide, but I think it's the same, although the video helps a little more; likewise I only try to help.
In your main menu you should create a tutorial world, omit everything by pressing B and the rest of the map will open for you.
Go straight up the stairs to the end and you will be where the video starts.
before arriving there look for foods like carrots and watermelons and just follow the video.
likewise you can unlock the other achievements related to dlc aquatic.







the video does not belong to me, but I thank the user Rimoxxy for the creation.

Alternatively, you can use magma blocks underwater (since they create air bubbles). Note that you cannot swim over magma blocks as you'll sink to the bottom and that walking on them will damage you.

Place (or find) some magma blocks underwater. Put a non-damaging block on top of one of the magma blocks. Stand and crouch on that block and move so you're hanging over the side. You'll get air from the bubbles and won't take fire damage.

When the achievement pops, move to the center of your block, uncrouch, and ascend straight up.

Note: In the tutorial world, there is a magma vein to the southwest of the map.

Note 2: Bring a clock to get a sense of what time of day it is and how much longer it will be before the achievement pops.