Guild Wars 2

Hello fellow mesmers, I come here victorious after finally managing to beat tier 3 Deadeye guy with 5 gambits. Here’s how I did it:
sword pistol and sword focus
full berserker and ruby orbs
utilities: mirror (heal), mantra of distraction, feedback, any

Build:
10 (III)
30 (II, IV, IX)
5 (leftover)
0
25 (any, X)

Get all gambits except crowd favorite.
Start with iDuelist, immediately swap and cast Phantasmal warden and go in the middle of the dome. When warden stops spinning, cast feedback. In the meantime swap back to pistol and cast iDuelist as soon as it’s ready. When you see a circle under you, use sword 2 to evade the killshot. Stick with pistol, don’t swap, he should be already at half health. Heal when necessary. When he uses killshot again, use sword 2 if it’s ready, otherwise stun him with pistol 5 (this can be tricky if he teleports when you shoot. You can also use mantra of distraction but its range is lower, so be careful). At this point, even if you get downed you should have 2 iDuelists out that will tear him apart quite quickly.

Hope this guide helps!