In the previous section, we collected the first of 3 Botanical Access passes and climbed to the upper levels of the huge greenhouse. At this point, you're still on LEVEL 4. Follow the walkways around to the left. As you pass the circular clump of spiky plants, Lara says she's not strong enough to make the long jump to the far walkway. Instead, head left.
Turn left again at the big tree. Go to the blue door and open it. This isn't necessary, but it will save you from having to jump across the roof again if you fall later on.
From the blue door, return past the big tree and continue straight on to the far wall. Follow the walkway around to the left until you come to a gap.
Take a running jump across the gap to grab the opposite edge. Pull up.
This gives Lara the lower-body strength upgrade she needs to get across the wider gap. Get the large health pack (18).
Then jump back to the other side. (This time you won't need to grab, since Lara can jump farther.)
Return to the wide gap near the circular planter.
Before jumping across, hang from the edge of the broken walkway.
Pull up into a handstand (hold Walk then press Forward + Action) to unlock the "Perfect Mimicry" achievement/trophy.
Now take a running jump across the wide gap. Even with the strength upgrade, you'll need to line it up carefully, along the left side, where the broken edges jut out a little farther.
Pull up on the other side and head to the left, up the stairs to LEVEL 5.
Watch out for the opening in the floor in the corner. Follow the walkway to the end.
Climb the vine-covered pipe, traverse to the right...
...and pull up on LEVEL 6. Step forward to trigger a cutscene.
Lara's shutting off the power has thrown Eckhardt's plans into disarray. Like all bad bosses, he takes out his frustration on his underlings, Boaz in particular. If you need a recap, check the main walkthrough.
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