All 133 challenges, which double as Steam achievements, and what each one unlocks
Data from build 23429717, updated
Win a run with a character and you unlock something, usually an item or a weapon. Most of Brotato's challenges work that way, which is why playing every character once pays off. The rest ask for a feat. Hold 3000 materials for Entrepreneur, or kill 15 enemies with a single explosion for Artificer. Items are the most common reward (56), with characters close behind (54). Winning in Danger 3 or higher unlocks the Ban System under a challenge called "Ew, what's that smell?!"
Reach 10 Elemental Damage and get 3 structures at the same time
Character: Technomage
Win a run in Danger 3 or more
Feature: Ban System
During the last 5 seconds of a wave after wave 2, press ‘Return to Main Menu’. Then press ‘Resume’ to try the wave again.
Item: Hourglass
Unlock the Catling Gun, Bonk Dog, Bot-O-Mine, Blazemander and Lootworm items
Character: Beast Master