Was messing around in utgarde keep today to get the roses for the love is in the air when I noticed you can use engineering bombs to hit the mobs behind the far left firewall after the first hall, the mobs aggro you and the wall disappears. you can skip 2 groups of trash mobs and head directly to the next area.
I was using saronite bombs, the picture shows where the circle was located. It shows nowhere near the mobs but they still aggro.
Tried it with other forms of targeted AOE and didnt seem to work.
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