Necro/Mesmer vs doppleganger?

what skills can this build use to fight the doppleganger at lv 17. My frend can di have tried many times but cant kill him. He always uses backfire beofre we load.

thanks in advance.

He only uses skills that you have on your bar. Therefore, if you don't bring Backfire, he won't use it.

Try bringing Sacrifices, so he'll kill himself using them.

If you're really stuck, then look here:
http://www.guildwarsguru.com/forum/s...ad.php?t=27576

yeah thats what i thought. I only took backfire b/c i was running late this morning and that was my frend skill bar.

I told my frend to try sacrificng skills but. Thanks for the site.