The issue I found with Armourer is its lack of synergy with other systems. You deal elemental damage, but not with spells, so there aren't any spell-related feats that help your abilities, and your weapons don't have the properties for most weapon-using feats to be used with.All over its a B.
Armored looks lie a warrior but isnt very good at it. Maybe its better as tanky control/support. I took magic initiate shield vas AC 22 iirc.
Alot of synergy in the magic items so nothing is really a C imho. Scaling is also consistent.
The issue I found with Armourer is its lack of synergy with other systems. You deal elemental damage, but not with spells, so there aren't any spell-related feats that help your abilities, and your weapons don't have the properties for most weapon-using feats to be used with.
Furthermore, your two attacks don't get any better than a +1 and a very minor damage increase even as the other weapon users are using flametongue/wounding/whatever weapons. But you can't hang with the spellcasting crowd either, being only a half-caster.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.