Sentry jump

A Sentry jump refers to using the knock back effect of the bullets from a Sentry gun or the rockets from a Level 3, to propel yourself great distances at the cost of some health. This tactic can be used by Engineers with the Wrangler to go to unusual places in maps in order to place a Sentry nest that may be difficult to destroy. They may also place Teleporters in places that players would not normally go.

Basics

Sentry Rocket Jumping

The same tactics as normal Rocket jumping apply:

• Fire the rockets from a level 3 Sentry gun at your feet using the Wrangler, crouching mid-air for maximum height.
  • Once this tactic is mastered, a skilled engineer can pack-up the Sentry gun that just launched him right before he is launched away, allowing him to redeploy the Sentry in a new place quickly (assuming he is initially next to it).
  • A simple variation of this technique is to simply crouch on top of the Sentry, aim straight down and very quickly tap Secondary Fire (to launch rockets) > Weaponswitch > Secondary Fire again (to pick the Sentry up). This will send the Engineer flying almost straight up. When mastered, the direction and height of the jump can be manipulated by aiming slightly further away on the ground and possibly through varition in timing of the actions.
  • Due to the Engineer being a low health, light framed class, when mid-air he has higher level of control over his direction and trajectory, much moreso than the Soldier or Demoman, and marginally more than a reflect jumping Pyro. However, he also flies higher and farther as a result, and so if you do not have enough health when making the jump you may die upon landing from fall damage. Try to be at full health when attempting this, or get a Medic to overheal you as you jump.

Bullet Jumping

• Stand on top of your Sentry and aim away from it in the direction you want to go before firing it. This requires more skill than a Rocket Jump, but often does less self-damage.