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Floor 2 Door 150 Code & Grumble Guide – Full Walkthrough

TopGameHub by TopGameHub
December 23, 2025
in Gaming, Guide, Roblox
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Stuck on theDoors Floor 2 Door 150level?
Use this guide to find out how to counter the Grumble entity and how to work out the code to escape!

Enter level 150 in the Floor 2 update ofDoors!
To familiarise yourself with the other entities that stalk the halls throughout floor 2, check out our Doors Floor 2 Monsters guide.

Doors Floor 2 Door 150

Door 150 is throwing a lot of players through a loop.
It’s already become a notoriously difficult level during the mid-way point of Floor 2.

The Terminal Codes

Anchor Code A is easy to find at the start, with it being typed out on the screen in front of you at the computer.
It’s the other 3 that you need to find!
However, Door 150 is confusing to navigate, making it tricky to work out where you need to go, and where you’ve already been before.

The location for B, C, and D changes for every player.
Listen out for the sound notification, as this leads you down the path that takes you to a terminal.
It sounds like a little bell with a ‘ding’.
The terminals themselves look like giant retro mobile phones.
Each of these terminals has a post-it note that has a number written on it with either a ‘+’ or ‘-‘.

The numbers for the main code are determined by these post-it notes, so make sure you’re writing them all down as you go along!
Again, these numbers are randomised each time, as well as the locations of each terminal.

Code Solution

Pay attention to the code that is written on the terminal.
If the post-it note has a +1, that means 1 needs to be added to all numbers in that terminal’s code.
The same goes for -1, but instead of adding 1, just take away 1 from each number.

For example, a code of 123 with a +1 post-it note would be 234, and a code of 123 with a -1 post-it note would be 012.

The Grumble

While avoiding the oncoming Grumble monster, you need to work out the code for the signal receptor.
The thing is, Grumble likes to chase anyone who enters this maze…

To deter Grumble, stun it with a crucifix, though this only works for a few seconds.
It is also attracted to light, so try to refrain from using your torch too much.
Although, you can try to distract the Grumble with light if you’re careful about it.
Shining a light in its face slows it down for a short while too.

Tags: Door150DoorsRobloxDoorsWalkthroughGrumbleGuide
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