Two questions for concealment in PvE:

 

1. Which tactical performs better damage wise, Volatile Strike or Acid Lash?

2. Is corrosive dart worth using? It surely is over rifle shot, if you are far and dont have energy issues. But how about if you have TA and in melee range?

I can't really speak for Acid Lash, because it never seems to trigger for me (even though there is no chance involved, so it must be a bug), but the general consensus seems to be that Volatile Strike is the better one.

 

Corrosive Dart is basically a requirement. On the one hand, it does a large amount of damage for the cost of one GCD, on the other hand you need some poison on the enemy to trigger Volatile Substance and make your Laceration refund one TA every 10 seconds. Keeping the enemy poisoned only through Acid Blade is way to much work.

Acid lash is THE go to pve tactical. Dart depends on situation but if you can use laceration without going down to 0 TAs it is always better.