You can’t get the jacksepticeye tank on console Because we can’t enter a code for it on the main menu

:((( nuuu

That actually really sucks

You can find the multipurpose room blueprint on the floating island

You can get the multipurpose room blueprint on the floating island near the back of the Aurora, the suspicious gathering of clouds. I also recommend you take the food there like marble melons and lantern fruit. Marble melons are good for food and lantern fruit is good in a bioreactor. For the eggs, u don’t really need them, so probably throw them away. For silver, build a scanner room and search for sandstone outcrops. About going deeper, just kinda go for it. I recommend to stay safe, although it is a little cheap, I’d use maps found here on Subnautica wiki to navigate to he places you need. You can also look up items here and find their fragments off this.

Good Luck!

To get the multipurpose room blurprints u have to go to the floating island and find the 3 degassi bases there, u can then get the multipurpose and a lot more cool things for your base, the bases are on mountains, 2 are on seprate mountains and u should be ablw to see them then the one in the middle is not on a mountain, it is between the mounatins, be careful going to the bases cuz there is a lot of the Cave Crawlers and they will attack you. They have one big eye and look like a spider, just thought i'd warn you about those.

When going deeper a sea moth is almost required, but if you only have the sea glide, you can check out most of the biomes and their blueprints. You need the vehicle builder (idk the real name) to make the seamoth. Those blue prints can be found in the sea weed biome by the safe shallows, then you should progress deeper. Make sure that your repair the aurora and get the Seamoth upgrade modules, those will save you a lot of time and effort! Once you have your sea moth keep a close watch for reaper leviathans because they can destroy it extremely quick. Good luck!

The multipurpose room is on of the islands about 2km away from your no.5 escape pod. Look at the back of the Aurora and you will see a large, kinda darker clump of clouds. That's where the island should be. You can also quite possibly find stasis rifle fragments :) hope this helps