Upgrade tree

After every level you pick one of three upgrades for the current run. Nodes belong to four branches and unlock deeper picks as you invest. Die and the whole tree resets — every run builds a new ship.

Firepower

Raw damage and the weapon-specific lines.

Rapid Fire
Burst Fire
Heavy Rounds
Critical Strike
Piercing Shots
Multi-Shot
Lethal Calibration
Shrapnel (Spread line)
Beam Focus & Sweep (Laser line)
Smart Target & Swarm (Homing line)
Quick Charge & Overload (Charged line)
Shrapnel Storm (capstone)

Defense

Staying alive: hull, shields and second chances.

Hull Plating
Nano Repair
Last Stand
Shield Boost
Shield Recharge
Reinforced Hull
Reactive Plating
Extended I-frames
Shield Overflow
Damage Threshold
Phoenix Protocol (capstone)

Tech

Chain lightning, ricochets and heat control.

Tracking Rounds
Chain Lightning
Conductor Coils
Capacitor Bank
Ricochet
Reflective Casing
Arc Splitter
Salvage Magnet
Emergency Protocol
Heat Sink
Cooled Rounds
Arc Ricochet & Singularity Round (capstones)

Special

Build-defining gambles and economy.

Bomb Resupply
Afterburner
Kill Frenzy
Data Harvester
Life Drain
Glass Cannon
Demolition Salvage
Pickup Radius
Tactical Foresight
Kill Cascade (capstone)

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