[dashcunning]

Yes, droids are dwarves.

Royal Hammer: weapon, +5 attack, -15% leadership for dwarves
Horn of King Borg: artifact, +5 attack for dwarves, -10% leadership for dwarves, -1 initiative for allied humans and elves
Axe of Ice: +7 defense, repair droid's melee attack becomes no retaliation, +10% physical damage resistance for dwarves
Axe of the Wind: +5 attack, +1 speed and initiative for dwarves


Steam armor adds 30% to a unit's base attack and defense at the cost of 1 speed. So +3 attack and +7 or +8 defense for repair droids. +7 or +8 attack and defense for guard droids. As far as I know the "affects short humanoid warriors" is just for flavor and doesn't actually mean anything, I could be wrong though. No idea on the lens. There are several categories of "archers" with no real rhyme or reason as to what units benefit from the "archer" requirement on a spell or skill or piece of equipment. Someone else probably knows this simply through trial and error.