I've gotta say... Lichenweed was way easier than Snakemolt for me. Went 1/1 on Licheweed with little issue, spent hours... literally hours trying to get Snakemolt the other day.
Lasthold was also a pain but getting the achievement for The Black Shroud is a damn nice feeling, especially since I know all of the others are going to be WAY easier.

TBS and Coerthas down, smooth sailing from here.