Unrailed! – Underwater Update Achievement Guide

How to get back to 100% achievements after the Underwater Update.

How to Obtain Underwater Update Achievements


Ahoy railroaders, this is a very early guide on how to get the five new achievements released with the Underwater Update.

The achievements are ordered chronologically, i.e. in the order you will probabily (want to) unlock them if you want to be efficient.

You can get all new achievements in one playthrough. Consider getting “Martian” separately.

Underwater Biom

How to enter

The underwater biom can be entered by building tracks into a tunnel/gate. You can see one in the main screen of the game.

For the gate to appear, you have to collect a special bolt first (confirmation required).

Special features

  • There is no shop when underwater! Plan ahead and farm your favorite wagons in the start biom first.
  • In every section, there is an option to exit.
  • The area is very open (on medium difficulty). Also there is dynamite-like fish. A dynamite wagon is good but not essential.
  • You can swim across gaps but, unlike in space, you can not float outside the ground area.
  • Remember to breath.
  • When you leave this biom you will have the next engine, therefore be in the next biom, and have to play until the next station to get into the shop.

Dynamite Fishing

  • These fish are explosive – handle with care!

Underwater, you will encounter dynamite-like fish. The expand when a player is near them. At a certain point they explode.

For this achievement, pick one up and let it kill you with it’s explosion.

20 Miles Under the Sea

  • You tend to like it underwater!

Play for 30 minutes in the new Underwater biom in one go. Remember that saving and loading will reset the counter!

Saved by Nausicaä

  • You found the exit.

Simply build tracks back to the exit present in each section. Note that you still have to reach the next station in the upper biom!


This achievement is not related to the new Underwater biom. Instead it fills the gap of “30 min-in-one-biom”-achievements.

  • Discover a new world.

Play in the Mars biom for at least 30 minutes in one go. Remember that saving and loading will reset the counter!

For Mars an Auto-Collector is really helpful. With blue dynamite resources will be plenty and you can build vertically to keep the train speed low for as long as possible. Two or three stations should be sufficient.


  • Getting all those bolts surely took some time!

There is a new special bolt in the underwater biom. It will appear by chance (hopefully within 3-5 stations). Collect it and all remaining special bolts to unlock this achievement. It should pop without the need to upgrade to the bus.

Egor Opleuha
About Egor Opleuha 7011 Articles
Egor Opleuha, also known as Juzzzie, is the Editor-in-Chief of Gameplay Tips. He is a writer with more than 12 years of experience in writing and editing online content. His favorite game was and still is the third part of the legendary Heroes of Might and Magic saga. He prefers to spend all his free time playing retro games and new indie games.

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