Nice use of Honorary Avenger to boost HP. I'm pretty sure you're misunderstanding Ronin's description. He gets +1 attack and + thwart while an upgrade is attached to him. Meaning: as long as Ronin has one upgrade, he gets +1 attack and +1 thwart. That doesn't mean Ronin gets +1 attack and +1 thwart for every upgrade attached.
So, with all 7 upgrades on him, he'd get 8 HP, 4 attack, 3 thwart, and an extra damage from Power Gloves. Still very nice, but not game-breaking.
I highly recommend United We Stand for decks like this. It will heal you and Ronin for one in stage 2, or you Ronin and another ally in stage 3.
Nice use of Honorary Avenger to boost HP. I'm pretty sure you're misunderstanding Ronin's description. He gets +1 attack and + thwart while an upgrade is attached to him. Meaning: as long as Ronin has one upgrade, he gets +1 attack and +1 thwart. That doesn't mean Ronin gets +1 attack and +1 thwart for every upgrade attached.
So, with all 7 upgrades on him, he'd get 8 HP, 4 attack, 3 thwart, and an extra damage from Power Gloves. Still very nice, but not game-breaking.
I highly recommend United We Stand for decks like this. It will heal you and Ronin for one in stage 2, or you Ronin and another ally in stage 3.