If you main mesmer, probably the most important thing you should focus to master is how to use correctly your reflects. Feedback is not your only source of proyectile reflection, you have phantasmal warden and temporal curtain, the last is really tricky to use and won’t work in some encounters . Said that, some encounters that require your utility are:
Swampland: Both bosses (Mossman and Bloomhunger) use heavy proyectile attacks, try to allways keep up some kind of reflection on them, this is a bit easier if you coordinate with one or multiple guardians.
Cliffside: The first fight against the Archdiviner he uses a spin attack that hit in melee range and also launch proyectiles, they hit very hard in higher levels, it is a very fast attack and hard to predict so pay atention to his attack animations while you are on lower levels. Also some mobs use bows here, they hit hard in higher levels.
Snowblind: This fractal is overall pretty easy if everyone in your group knows what to do and how to do it, probably wont happen in pugs. In the Elemental Source event, if anyone in your group aggro one ice elemental, you are already in problems because your group will get nervous if they dont burst it down fast and will keep pulling more and more elementals while kiting. To counter this if you notice any kind of aggro use your temporal curtain to pull them away from other elementals, extra points if you stack them up, and allways keep reflections on them, they have a hard to dodge proyectile attack that hits very very hard. Also this event have a lot of group and single target CC so slot mantra of concentration to help your team with stability.
Underground Facility: Well, almost all the mobs here use some kind of proyectile attack and all of them hit really hard, allways keep some kind of reflection up. To make things worse, some dredge here use a move that put some boons on all of them, being the most important PROTECTION, with this they have 100% protection uptime making them very very tanky, to counter this keep spamming your sword autoattack, it removes a boon on its third hit making them way easier to kill, null field can also help with this. Another cool trick i learned specially for the clown car event, you can slot Arcane Thievery and Signet of Inspiration, use arcane thievery to steal the boons from one of the dredge with the buffs and then signet of inspiration to copy them on everyone near you, this will give your party 1 minute of protection making this event a lot easier if you dont have a hammer guardian, your cds will be up before the boons dissapear to keep doing this while the event last.
Urban Battlegrounds: Probably the hardest part on this fractal is fighting the mobs, all of them hit insanely hard and sadly not all of them use proyectiles, keep and eye on Mages and guys using bows to use your reflections. Also use blurred frenzy, F4 and blocks (if you have) at will even if you dont know if you are going to get hit to prevent getting downed.
(edited by Nosoyelarty.7268)