Travelling over long distances in Big Walk can be a stern challenge, as it’s easy to get lost, but the secret tunnel system makes navigating much easier.
The tunnel system in Big Walk is locked initially in the game, and may require a significant amount of progress to unlock, depending on what you prioritize.
If you’re on the hunt for the large tunnels and want to get the Big Tunnel achievement, Insider Gaming has all the details you need.
How to Unlock The Tunnels in Big Walk

The tunnel system in Big Walk opens once you complete the yellow tower objectives, which, depending on the order you go through, may take some time.
After collecting all of the necessary puzzle rewards and placing them into the open slots at the top of the yellow tower, you will receive a key, which can then be cut to access the map.
Head to the bottom of the tower and interact with the first key cutter just outside, then follow the marker that appears on the top of the pillar to the next one, and repeat the process.
Eventually, once the key is fully cut, head towards the large yellow tunnel on the side of the mountain, and enter the key. This unlocks all tunnel entrances across the map.
How to Use The Tunnels in Big Walk
The tunnel system in Big Walk is one of the ways to travel over long distances more quickly, but unlike the train and chairlift, it doesn’t have a ride system.
Instead, you’ll have to navigate through the tunnels yourself, and you need to make sure you bring a flashlight, as they are extremely dark.
Inside the tunnels, you can navigate to any of the main towers on the map, following the tunnel system of the corresponding color to exit nearby.
There are some secrets to discover, however, so it’s worth exploring deep into the tunnel system to see what you can uncover.
Check out the Big Walk launch date trailer below.
How many players are you planning to complete Big Walk with? Let us know your ideas in the Insider Gaming Discord.
For more Big Walk, check out how to play the game for free, and read about the platform availability for the title.




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