Rise of the Argonauts

This constellation/achievement is comprised of feats taking place in Tartarus. Without any spoilers, the top four feats should kick in as you progress through the level. The 5th feat is for destroying Poison plants. From what I could tell, you cannot progress through each section without destroying these plants first, therefore it is un-missable. The final two feats are for destroying the pods containing fiends before they hatch which are present throughout Tartarus. These are bonus feats and are not required to complete the constellation. I destroyed three total pods and received this achievement, as well as Corona, Crown of Mastery (full completion achievement).