Motor Town: Behind the Wheel currently exposes 25 Steam achievements.
What they cover
Trucking tiers — Newbie / Apprentice / Junior / Senior Trucker.
Garbage collection tiers.
Drag racing tiers — including a perfect 0-second reaction time at the dragstrip.
Odometer milestones — 100 km / 1,000 km / 10,000 km.
Vehicle ownership — Own 10 / 30 Vehicles.
Tow and delivery counts.
Hitchhiker ghost hunting — Hunt 100 Ghost.
Formula SCM lap milestones at Ansan Speedway.
Hidden discovery — Found Strange Thing.
TinyTown's in-server tracker
TinyTown additionally tracks its own internal achievement set in the achievements page — these are separate from the 25 Steam achievements and cover community-specific milestones (long sessions, town visits, group activity, etc.). Treat the two systems as parallel rather than overlapping.