After a good season of hunting warbots on duck-and-cover basis, I decided to try hunting firemobs. GR'd to Grant Mine, laid my eyes on a 110/110 Grim Persecutor, pulled him into the mine premises and began battle using the buildings as cover.
After a promising start, I dropped down dead. Just like that, from full HP to zero.
I was under the assumption that you are supposed to see the fireball coming at you, much like the warbot rockets and beams (granted, the beams are not always drawn before they hit, but usually are). Is this how it usually goes? Are those mobs huntable in the first place?