Galvanic Shards = shock + clear (with
Zealous Inquisition)
shock = more dmg and enables
Shockburst Rounds single target
that's it!
IF YOU'RE STUCK
1) buy a better weapon
500+dps (PHYS / LIGHTNING ONLY! NO FIRE / COLD!)
+3 proj skills (pref higher obv)
2) buy rings with flat dmg (also gloves)
+phys or +lightning
remember to catalyze! (Uul-Netol / Esh)
3) (v1) make sure you're using
Voltaic Mark +
Elemental Weakness on tanky foes
if you're still not doing enough damage, double-check your gem sockets and passive tree to ensure you're running the most-optimal setup for your current level.
as for dying:
1) buy a better body armor / helmet
these two slots have the highest defensive roll values
2) add 20% quality all pieces of gear (Armorer's Scraps)
this increases the evasion / energy shield values by 1.2x
if you're sitting around 3k combined life + energy shield, you should be fine (but the more, the merrier!)
you may need to go through the "upgrade" process a couple of times for different progression stages. as you accumulate more currency, be prepared to spend it for a better overall experience!