Concussion Jumping

Concussion Jumping is a technique used in Team Fortress Classic to reach areas that are not easily accessible by classes other than Soldier or Demoman. Classes with the Concussion Grenade time their grenade throw and jump over it at the moment of its detonation. Concussion jumps require some time to master, but result in players being able to traverse difficult-to-reach places with less health damage, since concussion grenades disorient players but do not inflict damage.

In Team Fortress 2

In TF2, grenades have been removed from every class except Demoman. This means that it's still possible to do an explosion-boosted jump with the Demoman, even when wielding the Chargin' Targe. However, this will hurt the player unlike in TFC. This is also usually less effective than sticky jumping, and is much harder to control. When a Demoman is using the Chargin' Targe rather than the sticky bomb launcher however, grenade jumping can prove useful. It is employed by shooting a grenade and jumping above it right before it detonates. This is similar to Rocket Jumping, but requires a precise timing.

Trivia

• This form of grenade jumping is often used in conjunction with bunnyhopping to quickly move across a map.
• The Rocket Jumper and the Sticky Jumper are weapons for the Soldier and Demoman in Team Fortress 2. They are intended to help players master concussion jumping. Both weapons increase max ammo on the player by 200%, add 100% more damage from bullets, explosives and fire, and deal no damage to themselves or to other players.