Spark Skill on Dreadnought Vanguard

Very frustrating experience to try to use the Spark skill, even with Piercing support gem, on this area. Mobs would stack in bulk on the opposite side of some of the bridges between moving platforms and many of the mobs will just snipe from a distance while I have to position very close to the bridge to get the Sparks to funnel over the bridge. Incredibly frustrating experience which takes forever. Maybe make the bridges wider. :shrug: