Demoman Gravelpit Skywalk

Here is an youtube example of how to skywalk with the demoman on gravelpit.

Dustbowl Skybox Skywalk Exploit

Heres a video that demonstrates how its currently possible to sky walk on dustbowl with the soldier and demoman.



Credit goes to Kevin and Vin. I don't think its possible for an engineer to get up anymore.

Rocket Jumping

Below is a video collection of rocket jumps to some very unique spots in team fortress 2 that you can get to with both a soldier and a demoman. These aren't exploits but some of them are certainly unintended and can help you kill unsuspecting players more easily.

Under the Map Exploit

This exploit can be preformed by either a demoman or a solider on TC_Hydro and involves rocket or pipe jumping to a spot that allows you to walk under the map. Its very devastating for the soldier especially because he can shoot people through the floor.

The bush marks the spot where you can get over the map.



As you can see you can use it to infiltrate behind enemy lines unseen or stay under the map and kill people with rockets as a soldier.

Free Melee Attack Exploit

This is a variation of the guaranteed critical hit exploit and it allows you to preform 2 attacks at the same time with a melee weapon. Its the most deadly for a stealth spy but its useful for any class.

The steps to preform this exploit are:

1. Melee Attack and press lastinv (q key) right away
2. Press lastinv (q key) again to switch back to your melee weapon
3. You should automatically attack about 1 second
4. Make another melee attack at the same time for an instant double hit
   

Here is a video by Estryark showing the exploit in action.

Guaranteed Critical Hit Exploit

There is a new exploit involving weapon switching that allows you to get a critical hit every time you attack someone.

How to preform the exploit:

1. Attack
2. Press lastinv (q key) immediately before your attack lands

The electric crit sound will play if you did it right.



Here is a video by Estryark showing the exploit in action at around 17 seconds.