Near the beginning of the game, you'll have to sneak into a building. deactivate the security measures, then drive the Company Lorry (truck) onto a platform. After parking the truck on the platform, head left to the emergency hatch on the ground and open it. Start climbing down the ladder.
There are two Achievements you can get from your interactions with this ladder:
Play it Safe
No Time for This!To get
No Time for This!, press the jump button while at the top of the ladder. Just before you reach the ground, tap
to grab the ladder and save yourself. The Achievement should pop right after you grab the ladder.