Vines

This collection of vines poses very little threat, but they will attempt to attack you if you get to close, causing minor damage.

There are two ways to get rid of these, either light the flammable fluid surrounding the vent area with your Lighter, or use the Flamethrower or Grenade Launcher with the Flame Rounds to destroy the vines. Once gone, you can climb through the vent into the next room.