The lab is on an island, so there's been some filtering.

"Everyone be calm! How hard can it - umphrg!"

"And that's why you don't tempt Murphy, Hammond."

Or shoggoths. Ah well. The remainder, all seven, have managed to clear the maze in one group of three and one group of four.

The group of three has a series of stepping platforms over a ball pit.

The group four has a chainlink fence to climb. On the same level as the three shoggoths under the bridge.