Completing the reactor puzzle in DERELIKT revolves around selecting hexagons in a specific sequence to generate heat and finally trigger a reactor meltdown. You’ll need to carefully understand the mechanics at play, which can be tricky, especially since one wrong move can set you back to stage one. This puzzle truly tests your strategy as you juggle between OFF and WARM hexagons to avoid HOT ones.
As I tackled this puzzle, I found that the best way to approach it was by taking my time to plan each move. The first few attempts may seem overwhelming, but once you grasp the heat cycling and how the hexagons interact, it feels much more manageable. Make sure to remember that you can reset the puzzle anytime, so don’t hesitate to backtrack if needed!
Before diving into the solution, familiarize yourself with the hexagon mechanics: selecting the OFF hexagons (COLD) and red hexagons (WARM) is crucial, while yellow hexagons (HOT) should be avoided. Let’s break down the solution step by step.
Simple Rules to Follow
The terminal in the reactor room lays out the basic premise: select the rods correctly to maximize heat generation and approach a reactor meltdown. This fundamental rule is the backbone of your strategy.
Focus on identifying the OFF hexagons (COLD) and red hexagons (WARM), while avoiding any interactions with the yellow hexagons (HOT). The heat transitions between these states—OFF to red, red to yellow, and then yellow back to OFF, affecting the surrounding hexagons with each selection.

The puzzle begins with a specific arrangement of hexagons, which is illustrated below. Should you find yourself in a bind, remember that you can reset the puzzle at any point.

Solution
Commence your puzzle-solving journey with the default hexagon setup shown below.

Start by selecting the first set of hexagons as shown in the following pattern:
Next, choose the following hexagons in this precise order to achieve the outlined pattern:

Proceed to follow this third selection sequence to transition to this resulting arrangement:

Finally, select the last set of hexagons in the order displayed below to successfully resolve the puzzle and initiate the reactor meltdown.
