Understanding the Build System
Ventilator's build system revolves around Module Slots — you have three, and they fill up fast. Every run you'll be choosing between offense, mobility, and utility modules. The game rewards committing to one direction early.
Build 1: Full Thrust
Prioritize: Afterburner → Boost Coolant → Scatter Vent
This is the fastest clear speed build. You trade survivability for pure room-clearing power. Best against the first boss (HVAC-7) which punishes slow play.
Build 2: Shield Loop
Prioritize: Reactive Plating → Heat Sink → Overclock
The shield loop generates a damage shield every time you activate an ability. With Overclock reducing your cooldowns, this creates near-permanent uptime. Weak against the second boss (Pressure Drop) which has a shield-break mechanic.
Build 3: Hybrid Vent
Prioritize: Scatter Vent → Boost Coolant → Reactive Plating
The flex pick. Slower than Full Thrust but more forgiving. Recommended for players still learning floor 3 layouts.
When to Reroll
Never reroll before floor 2. The shop discount from Haggle Module only applies starting floor 2, so rerolling on floor 1 is always a net negative on resources.