Quick answer. Weapons, Sidearms, and upgrades are confirmed Mortal Shell II systems. Public Steam achievement data exposes several item names; statistics, costs, and complete upgrade paths are To be confirmed.
Weapon role
Weapons are part of the confirmed Mortal Shell II combat framework. Public achievement names include Axe and Dagger, Forgotten Crossbow, Veteran's Battle Axe, Great Martyr's Blade, Salvaged Trebuchaxe, Axatana, Triarch Repeater, Black Needle, Clockwork Scythe, Caged Hystrix, Obsidian Hammer, and Ballistazooka. The exact weapon / Sidearm classification, move sets, damage values, and locations: To be confirmed.
Sidearms
Sidearms are confirmed alongside weapons, and the public list includes an achievement for unlocking all Sidearms. Individual Sidearm names, functions, ammunition rules, and availability: To be confirmed.
Upgrade paths
Upgrades are confirmed. The official achievement list refers to maxing out a weapon at the Tarforge, while upgrade materials, costs, limits, branches, and exact effects: To be confirmed.
No best build claims
Without verified item and upgrade details, this page does not publish rankings or optimal builds. Every such recommendation remains To be confirmed.
Source: the official Steam achievement list and official Mortal Shell II website.
