Subnautica: Below Zero Below Zero – Challenge Runs

Subnautica: Below Zero Below Zero – Challenge Runs 1 - steamsplay.com
Subnautica: Below Zero Below Zero – Challenge Runs 1 - steamsplay.com
This is a list of challenge runs for those looking for more things to do in Below Zero. Personally, I found Below Zero to be a lot easier than the original Subnautica. Neither was designed to be a challenging game, so here are some of my own challenges.

 
 

Easier challenges

 

 

PETA’s Most Wanted

 

 
Difficulty: ~ 1/5 
 
Description: You know what to do, you monster. The method does not matter. 
 
Subnautica: Below Zero Below Zero - Challenge Runs 
 
Hit List

  • Smaller creatures: Brute Shark, Cryptosuchus, Crashfish, Pengling (did I stutter?), Snow Stalker, Sea Monkey 
  • Larger creatures: Chelicerate, Void Chelicerate, Shadow Leviathan

Personally, I don’t like this challenge, but it’s a commonly-requested one. 
 

Vegan Run

 

 
Difficulty: ~ 1.5/5 
 
Description: You’re not allowed to use or hurt any fauna (creatures). The challenge run ends after you’ve built an interior growbed and water filtration machine. 
 
It’s slightly harder than a vegan run in the original since you can’t use coral + salt to make water. 
 

Hardcore

 

 
Difficulty: ~ 2/5 
 
Description: Nothing special. Simply beat the game in hardcore mode. It’s easier if you complete this faster because there are plenty of bugs in the game that will gladly end your run. 
 

No-base Run

 

 
Difficulty: ~ 1.5/5 
 
Description: Complete the run without building any bases. 
 
This one’s for Sea Truck lovers with a lot of patience. 
 

No-vehicle Run

 

 
Difficulty: ~ 2/5 
 
Description: Complete the run without any vehicles. 
 
This one’s for Sea Truck haters with a lot of patience. 
 
 

Harder Challenges

 

 

Standard No-Vehicle + No-Base challenge

 

 
Difficulty: 3/5 
 
Description: You’re not allowed to build any vehicles, bases, or habitat builders. 
 
Somewhat of a boring challenge because of how tedious it is. However, it is still faster than your typical normal run. You can do it with a minimum of 2 High Capacity Oxygen Tanks. 
 
(However, if you want to make the run less tedious, you can tweak the rules to allow yourself to build unpowered bases so that you can use storage lockers instead of floating waterproof lockers.) 
 

“Below Zero^2” Challenge

 

 
Difficulty: 4/5 
 
Description: This is a modified No-Vehicle + No-Base challenge. 
 
This one’s also tedious, but quite fun. It’s more difficult than the standard no-vehicle + no-base challenge. And more challenging == more rewarding. 
 
Subnautica: Below Zero Below Zero - Challenge Runs 
 
Main restrictions

  • When you’re underwater, you must stay Below 0 meters. You’re not allowed to surface for air (except at any of the mandatory story “islands” listed below) or use any bases/vehicles. 
  • When you’re on an “island”, you must stay Below 0 degrees (not literally) in the sense that you can’t wear a cold suit or use any bases/vehicles.

You’re only allowed to surface on the mandatory story “islands”: the initial crash landing location, Delta Island, Glacial Basin, the Greenhouse iceberg, the Outpost Zero entrance, the final Architect Gate area. 
 
Other restrictions

  • No vehicles allowed 
  • For convenience, you are allowed only two 1-corridor bases so that you don’t have to trek all the way back to your drop pod for fabrication and storage. 1 can be built anywhere on Delta Island and 1 can be built on Glacial Basin next to Phi Robotics Lab. 
  • Growing plants at your 2 bases is allowed 
  • You are allowed to have a maximum of 3 High Capacity O2 Tanks for this challenge. Almost all of the challenge can be done with just 2.

The first five minutes will be tight. You start with 45s of oxygen, and it takes a little longer than 45s round trip to get the nearest creepvine seeds from the drop pod. Basically, you can barely make it before completely blacking out. 
 
Conditions for clearing

  • Build AL-AN 
  • Visit Maida at her greenhouse 
  • Beat the game 
  • (Optional bonus objective) Visit all Architect Artifacts (you will definitely need 3 HCOTs for this)

I’ve cleared the challenge myself, so I know it’s doable (without resorting to glitches, air pipes, eating bladderfish for air, etc.). 
 

By HSuke

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