The mesmer is a great class to play and verry versatile i use : (scepter and focus ) damage is just a bit low indead but for pve leveling and really soloing mesmer is verry good the only thing you don t must do with mesmer is stop moving and keep creating distance. When you have agro dive true your images so they will pick up agro.
healing skill : eather feast utility skils phantasmal defender , miror images , decoy mass invis. with you have now 7 image availlable 2 stealth options and 4 durations in a short while cast 1 your illusions than after bleeding and blinding stunning use phantasm
The other thing thats the trouble some fights take to long and the reset rate of respawn of mobs are to short and you wil probally have to kill them several time s that was my problem in gw2 playing as mesmer but mesmer is a wicked class to play ive you now your movement!!! PEECE to al the MESMER!!!!!!!!!
(you will destroy them sinds they do more damage.)