NOTE: If you don't care about this particular achievement, follow the sequence shown below, but take your time. Once you enter the hallway beyond the LOUNGE, the enemies will not pursue, and you can go after the TELEPORTER DISK at your leisure.

In the previous section, we retrieved the large medipack (16) (215/239) in the corridor with the security guard and armed soldier then ran back to the entrance to the LOUNGE with the couches and potted plants. Now comes the timed run for the achievement/trophy.

Entering the LOUNGE triggers a cutscene, so if possible, sprint in, veering a little to the left as you go. This will put Lara in a good spot when the cutscene finishes.

Cutscene: Lara tells Zip that the VCI people are cutting through the door with welding equipment. He informs her that the room she's in is rigged with motion sensors and advises her to move slowly so she doesn't activate the gun turrets.
IMPORTANT: The timer begins when the cutscene starts, not when it finishes. So, I recommend watching it once to get the gist. Then reload, sprint into the room, and skip the cutscene (by holding the Draw Weapon button). If you do this, you'll have about 50 seconds to get the disk before the guards break in.

There are 2 buttons flanking the exit. Walk to the left button and press it.

Without hesitating, walk to the right button and press it as well.

This opens one of the doors between the two buttons. Run through...

...then continue through the open door on the left. The turrets will activate, but once you enter the next hallway...

...the closed door will shield Lara from gunfire. If you're after the achievement/trophy, sprint forward, easing off the Sprint/Dash button as you run through the doorway ahead on the right. (If you don't care about achievements, you can go slowly from here.)

Run/sprint into the TELEPORTER ROOM, through the doorway on the left...

...and into a well-lit ROOM WITH SEVEN SUITCASES. Six of these contain bombs. One holds the disk.
NOTE: If you aren't trying for "Open Up!" and want to see a cool bit of business, skip to the next section. Otherwise keep going, quick as you can.

Don't hesitate. Just run to the second case in the second row from the left.

Stand facing its left side and press Action to open it and get the TELEPORTER DISK (17) (216/239). If you do this before the timer runs out, the "Open Up!" achievement/trophy should pop.

If you see a short cutscene showing the enemies breaking down the door, you'll need to reload and try again.
DARK MODE: I plan to add optional dark mode for these pages, but my current priority is updating the walkthroughs. Meanwhile, may I suggest a reputable dark mode browser extension, such as Dark Reader? (Download only from trusted sites, like darkreader.org or your browser's web store.)
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