From The Talos Principle Wiki
Identifier: North 3-5
Area: Lost Marshes
Puzzle Type: Main
Previous Puzzle: Prison
Next Puzzle: Up and Down

Twice is the fifth main puzzle in the Lost Marshes area of The Talos Principle 2.

Puzzle elements


When you enter the puzzle, you see a corridor on the right side with two blue doors blocking your way. In the middle area between the two blue doors is a jammer, and beyond that is a blue receiver that controls access to the progress wheel. In front of you is a another area blocked off with a grate wall. There are two blue doors here as well. In the area between the two blue doors is a pressure plate, and beyond that is a red emitter. An accumulator is available outside, and there are two swappers, one with a jammer in it, and another with an inverter.


A basic hint:

[ hint ]
Since the name of the puzzle is Twice, you have to figure out how to solve two blue doors, twice.

If you're struggling to get started:

[ hint ]
Your first objective is to obtain the second jammer.

If you're struggling to charge the accumulator:

[ hint ]
The pressure plate in the middle deactivates both blue doors.

If you're struggling to move the inverter near the end:

[ hint ]
The inverter should not be used in the end. It's work is in the beginning.

If you're struggling to move down the final corridor:

[ hint ]
Set up one of the jammers in the middle for maximum flexibility. Remember that a charged accumulator can be placed in a swapper, and it won't lose its charge.