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
Complete 'Canyon Caper'
Complete 'Journal Returnal'
Complete 'The Pickle Mission'
Complete 'Loot Tony's Barn'
Complete 'Cloud Climber'
Complete 'A Mine, or a Tomb?'
Fully upgrade your armor
Complete 'Mob Camp Infiltration'
Fully upgrade your speed
Complete 'Deconstruction Project'
Fully upgrade your damage
Complete 'North Mine Mystery'
Complete 'Boulder Field Pages'
Complete 'Light in the Dark'
Complete 'Bunker Break-in'
Complete 'South Mine Spelunking'
Complete 'Bug Spray Blaze'
Complete 'Swamp Swimmer'
Complete 'Lockpick O'Clock'
Complete 'Fetch Scraps from Candice'
Complete 'Baby's First Mission'
Defeat Charles in Nightmare Mode