Unlock every Main Weapon and Power Weapon in the game, and dispatch at least 25 enemies with each one. Weapons are found as drops inside biome rooms during runs — they do not carry over between runs unless you invest Halcyon in the Armor Matrix to unlock starting loadout options. Kill counts are tracked persistently across all runs.
- Track each weapon's kill count in The Passage terminal → Weapon Log
- All weapons must reach 25 kills — no minimum per run, fully cumulative across all runs
- Weapons that feel underpowered are best farmed in Biome 1 or 2 where enemy health pools are lowest
- Power Weapons are rarer drops — you may need to actively seek them rather than wait for luck
- Once the Armor Matrix "Preferred Loadout" node is unlocked, you can guarantee a specific weapon appears in your first room of each run
Main Weapon Catalogue
Main Weapons are Arjun's primary firearms. All have an alt-fire mode activated by a half-pull of L2 and a standard fire on R2. Each weapon appears as a biome drop with a base version — upgraded Variants appear at higher rarity tiers.
Power Weapon Catalogue
Power Weapons are Arjun's special-charge weapons — charged exclusively by absorbing enemy projectiles with the Shield. They deal massive damage and have unique effects. All 6 must reach 25 kills each for Full Arsenal.
Unlock and use all Traits and Variants of any single weapon. Every weapon in Saros has multiple upgrade tiers — Variants (upgraded base stats) and Traits (passive special effects that modify how the weapon behaves). You only need to complete the full Trait and Variant tree for one weapon to earn this trophy.
Recommended weapon: the Hollowpoint Pistol. It is the default weapon with the deepest upgrade tree and the fastest active reload window — it appears in every run, making Trait upgrades easy to find and apply. Its full tree can typically be completed within 4–6 dedicated runs.
| # | Trait / Variant | Effect | How to Unlock |
|---|---|---|---|
| ⬆️ | Variant I All weapons | Improved base damage, accuracy, and magazine size | Found as a higher-rarity weapon drop in any biome. Same weapon type, glowing blue frame around the weapon icon |
| ⬆️ | Variant II All weapons | Further improved stats — near maximum performance | Rarer drop, appears from Biome 3 onward. Preferred Loadout Matrix node helps force this to appear |
| ✨ | Trait: Rapid Mag All Main Weapons | Reduces magazine reload time by 30% — passive always active | Appears as a Trait node attachment on weapon drop icons — gold star symbol on the weapon frame |
| ✨ | Trait: Shield Feeder All Main Weapons | Each kill with this weapon grants bonus Shield charge | Uncommon drop — more frequent in Biome 4+ rooms. Combine with Carcosan Lancer for maximum shield charge speed |
| ✨ | Trait: OverDrive Booster All Main Weapons | OverDrive activates after 1 fewer consecutive active reload | Rare trait. Appears more in Biome 5+ drops. Worth seeking for OverDrive trophy runs simultaneously |
| ✨ | Trait: Eclipse Bane All Main Weapons | +25% damage to enemies during the Eclipse state | Eclipse-specific trait — found more commonly in Biome 6–7 drops. Stack with Eclipse Projector Power Weapon for a strong synergy build |
| ✨ | Trait: Corruption Cleanse All Main Weapons | Every 10 kills cleanses one stage of Corruption automatically | Very rare trait — primarily found in Banyan Tree room drops. Worth having in the Hollowpoint's tree for passive Corruption management |
Saros Weapons & Full Arsenal — Frequently Asked
How many weapons are in Saros?
There are 8 Main Weapons — split across sidearms, energy and heavy categories — plus a set of Power Weapons. You need 25 kills with every one of them for the Full Arsenal trophy.
How do you get the Full Arsenal trophy?
Full Arsenal is a Silver trophy: unlock every Main Weapon and Power Weapon and get at least 25 kills with each. Kill counts are cumulative across all runs, so it's about using every weapon you find rather than a skill check.
What's the fastest way to farm 25 kills per weapon?
Run Biome 1 (Shattered Rise) — its enemies have the lowest health in the game, so even weak weapons clear the 25-kill requirement in a single run. Equip each new weapon the moment it drops.
Is Full Arsenal missable?
No. Saros has no missable trophies, and weapon kill counts are tracked permanently, so you can chip away at Full Arsenal across as many runs as you need.
What is Master Craftsman?
A Bronze trophy for unlocking every weapon Trait. Traits are earned by using weapons and meeting their challenge conditions, so it comes naturally alongside the Full Arsenal grind.