Full list of all 25 Choo-Choo Charles achievements. It takes around 2-3 hours to unlock all of the achievements in the base game on Windows.
The base game contains 24 achievements, and there is 1 DLC pack containing 1 achievements.
Live happily ever after
Open the temple of Charles
Collect all eleven paint cans
Fully upgrade your armor
Complete 'Journal Returnal'
Complete 'Cloud Climber'
Complete 'A Mine, or a Tomb?'
Complete 'Mob Camp Infiltration'
Complete 'Deconstruction Project'
Complete 'North Mine Mystery'
Fully upgrade your damage
Complete 'Boulder Field Pages'
Complete 'Light in the Dark'
Complete 'Bunker Break-in'
Fully upgrade your speed
Complete 'The Pickle Mission'
Complete 'Loot Tony's Barn'
Complete 'Canyon Caper'
Complete 'South Mine Spelunking'
Complete 'Bug Spray Blaze'
Complete 'Lockpick O'Clock'
Complete 'Swamp Swimmer'
Complete 'Fetch Scraps from Candice'
Complete 'Baby's First Mission'
Defeat Charles in Nightmare Mode