Originally Posted by
-Cyri-
Actually yes, corrosive is the most effective against ancients.
Not true, it only covers 2 of the current 3 normal ancients, and 1 of the 2 boss ancients. (seriously, Phorid is overdue getting a new model)
Corrosive is only good against fossilized type ancients (75%), with blast coming second (50%). Pair up with slash (15%). That'll cover toxics, disruptors & Lephantis.
Sinew type ancients need prodded with puncture (+25%) and either cold (25%) or radiation (50%). Use for healers & Phorid.
Fossilized are resistant to cold (-25%), toxin (-50%) & radiation (-75%).
Sinew have resistance to blast damage (-50%).
It's literally impossible to make a perfect setup that covers all infested, and since sinew isn't classed as a type of armour (it's classed as a type of flesh) it negates corrosive damage.