This awesome exploit was sent to me by Dani. It allows a player to go underneath the Red spawn on gravelpit and kill people as they leave their spawn.
On cp_gravelpit
- Push up against the wall in the video.
- Hold crouch and then turn to the right
- Press forward and fall through, underneath the ground.
The Engineer can use this exploit the best with the sentry gun. Because this exploit seems to take advantage of geometery there are probably a lot of other places to do this at so TF2Exploits will try to keep them coming.
The engineer can also get onto the roof of site B as shown in the video below. I recommend putting a teleporter up there to give your snipers a deadly advantage.
Enjoy.