Unlocking the Chairlift
Finishing the Green route places the finished key and opens the lift. At that point the Chairlift is available, but Big Sit has not fired.
Unlock the Chairlift through the Green route, then actually sit in a ChairLift car. Big Sit is tied to the Chairlift’s riding pose, not the unlock itself.
Big Sit is tied to the ChairLift cars themselves. The trigger is entering the sitting pose on a car, not unlocking the lift or standing at a terminus.
Big Sit


Unlock the Chairlift through the Green route, then board a ChairLift car and enter its sitting pose. The achievement is attached directly to the cars, so unlocking the system or standing at a terminus does not count.
Nothing beyond sitting in a car is required.
This is one of the gameplay achievements. See the full achievements list
Pick the line that matches your run. The Chairlift system and the sitting pose fail for different reasons.
The Chairlift is still locked
That is a progression problem, not an achievement problem. Finish the Green Key route so the Chairlift becomes available.
Open Chairlift GuideThree steps. Only the last one is the achievement trigger.
1. Make the Chairlift available
If the lift is still locked, finish the Green Key route first.
Open Chairlift Unlock Guide2. Go to a terminus
The Chairlift has a Start Terminus and an End Terminus. Either end works, so use whichever one you can reach.
3. Sit in a ChairLift car
Board a car and stay in the sitting pose. The cars carry the medal logic, so the seat is the achievement trigger.
If the achievement has not appeared, ride another car before replaying the whole Green route.
Big Sit is attached to the ChairLift cars, not to the Green Key unlock.
The achievement logic lives on the cars themselves. It checks your pose while you are using the chair, so the medal is awarded from the car rather than from the lift system being open. That is why unlocking the Chairlift and sitting in it are separate states.
You do not need any of this to ride the Chairlift.
Two different states. Only the second one awards Big Sit.
Finishing the Green route places the finished key and opens the lift. At that point the Chairlift is available, but Big Sit has not fired.
Boarding a car puts your player into the riding pose the car is checking for. This is the state that awards the Chairlift medal.
Work down the list. The first line that is still true is the one to fix.
Standing beside a car, jumping on the frame or touching the cable machinery does not put you in the pose. You have to be seated in the car itself.
Show Me the Sitting StepIf the lift is not usable yet, this is a Chairlift problem rather than an achievement problem.
Open Chairlift GuideThe pose logic sits on more than one car, so it is not tied to one special chair. If a car did not register you, step off and let another one take you.
Give the riding pose time to register before you step off. No minimum sitting time is published, so a couple of seconds is a retry, not a requirement.
The in-game medal and the Steam or PS5 notification can update at different times. Check your platform achievement list before replaying the whole Green route.
These come up often, but none of them is required.
A full trip to the other end
You do not have to ride all the way. The cars check your pose, not your arrival at the far terminus.
One specific terminus
Both ends of the lift can be used to board, and neither one is named as the required starting point.
One specific chair
The same pose logic sits on more than one car, so no single numbered chair has to be the one you take.
Reaching the highest point
That belongs to Big Climb. Sitting on the lift does not depend on where the line ends.
A fixed sitting time
No specific number of seconds is required. Stay in the seat long enough for the pose to register.
Both involve the Chairlift, but they are two different achievements with two different triggers.
Awarded from a ChairLift car while you are seated on it.
Awarded from the peak itself. The Chairlift can carry you toward that area, but sitting on it does not award the summit achievement.
Open Big Climb Guide초록 루트로 리프트를 해금한 뒤 리프트 의자에 타서 앉으세요. 메달은 리프트가 열려 있어서가 아니라 의자에서 주어집니다.
아니요. 리프트를 이용할 수 있게 되는 것은 앉을 곳이 생기는 것뿐이며, 업적 자체는 의자에 속해 있습니다.
네. 발동 조건은 의자에서의 탑승 자세이므로 승강장이나 의자 옆에 서 있는 것만으로는 부족합니다.
아니요. 발동 조건 중 어느 것도 반대편 승강장에 도착하는지에 달려 있지 않습니다.
아니요. 리프트의 어느 쪽 끝이든 탑승 지점으로 쓸 수 있습니다.
아니요. 같은 자세 판정이 여러 의자에 있으므로 특정한 의자를 찾을 필요가 없어요.
정해진 초 수는 필요하지 않습니다. 내리기 전에 탑승 자세가 인식될 만큼 충분히 유지하세요.
구조물 위에 서 있지 않고 의자에 앉아 있었는지 확인한 다음, 다른 의자를 타 보고 내리기 전에 자세가 자리 잡게 하세요.
아니요. 빅 클라임은 가장 높은 지점에 도달해야 얻는 것으로, 별개의 발동 조건입니다. Big Climb 가이드
일반적인 진행에서는 먼저 리프트를 해금해야 하며, 그 루트는 초록 구역을 거칩니다. 초록 구역 워크스루
Chairlift Guide
How to unlock the lift, where its ends are, and why it will not work.
Green Area Walkthrough
The Green route that ends at the Chairlift destination.
Big Climb
The summit achievement, with its own peak trigger.
Big Ride
The Train achievement, awarded for boarding a train.
Big Tunnel
The tunnel achievement, awarded for going inside one.
Achievements
All 12 gameplay achievements and the platform layer.
The Big Sit ChairLift car pose trigger and the sitting check last verified on 1 October 2026.