The Grassrooms

How to escape The Grassrooms

Keep moving the whole time; standing still too long lets the vines take you, so treat the level as a slow walk that never fully stops. Work the puzzle in order: throw the levers to slide the bridge pieces into place, cut the ropes holding the loose planks so you can cross, then unlock the metal doors blocking the inner maze. With the path open, hunt down the four M.E.G. buttons, they're spread through the ground maze and the raised walkways above it, and all four have to be pressed to release the final door and call the exit elevator. Ride that elevator down and it plays out the Empty City ending before dropping you back in The Bunker. If you lose track of a button, use the windows as a landmark: they tend to sit near the outer walls.

Clear it and you move on to Empty City ending → The Bunker.