S/B Spud Build Lab

FIELD MANUAL / dlc

Brotato Primal Dread Guide

Read the run-changing decisions introduced in Primal Dread and plan the next shop visit.

Mecha invests parts in equipped weapons. Reinforcement grants extra stats, and dismantling a mechanized weapon can recover parts. The route introduces laser attacks and slowing oil. Mutation can copy an item effect at random. Acid on the ground changes where you can safely stand.

Save a pre-shop snapshot. Enter only the modifier you actually saw, then compare. A community capture of PC 1.2.0.0 documents the first Mecha threshold at +3 and Mutation at −3. Droid is restricted to Mecha and Variant to Mutation. Check your current patch before committing. Run observations and screenshots.

MODULE 08 ↗

Mecha Build Planner

Track the weapon you want to reinforce and compare observed changes before committing more Mecha Parts.

MODULE 09 ↗

Mutation Build Planner

Model an observed copied item effect and compare its upside and drawback against the original inventory.

How to use this reference

Select your route and equipment, save a baseline, and use the adjustments to record observed effects. Compare the resulting stat changes against your baseline.

Sources and scope

PC reference snapshot checked 4 November 2026. Well Rounded reference · Ranger reference · Developer announcements · Weapon class bonuses

Will these numbers match every run?

Weapon tiers, version changes and rolled effects matter. Check the final in-game tooltip for your build. Calculated values describe the assumptions shown here.

Related tools

MODULE 01 ↗

Build Planner

Equip up to six weapons, stack shop items and compare character-adjusted stat changes. Save a snapshot before testing the next shop purchase.

MODULE 06 ↗

DPS Calculator

Compare a normal hit, an all-critical attack and the expected single-target output over many attacks.

MODULE 05 ↗

Weapon Synergy

Test a gun class bonus alongside flat ranged damage and the attack-speed cost of Scope.