These methods are accomplished by either Thief Sword 2 or Thief Staff 5. The Staff 5 jump requires a normal jump at the start of the skill use to get extra height.
My goal with releasing this video is that Anet will resolve these issues. No third party software is being used. I'm just using in-game weapon skills.
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The Thief Sword #2 can be fixed by changing the objectives. Towers have been moved in the past (Ogrewatch) and when the Warclaw was released there were often small touch-ups to objectives to prevent getting inside without using siege. I don't see how this is any different.
The Thief Staff #5 should disallow for jumping to be used before you use the skill so that the extra height isn't achieved.
![](https://s2.save4k.ru/pic/xFzsiIvsRhc/maxresdefault.jpg)