Alchemy? Worth it?

[Dorkus]

There are only a handful of spells that are worth upgrading, imo -- mainly direct damage spells. The other useful spells in the game -- phantom, slow, blind, etc. -- are just as useful or even more useful at low levels as they are upgraded. E.g. before I realized that you could always cast down a level, I cursed myself many many times for upgrading phantom and blind, because the higher level versions of those spells cost significantly more mana.