Here is the full list of all 15 Locomancer achievements.
Ride a train.
Start 10 fires.
Spawn 1000 items.
Spawn 10000 items.
Ride 100 rideables.
Ride 100 trains.
Drive 100 locomotives.
Travel the circumference of Earth.
Destroy the One Ring and return home in time for tea.
Cause 100 railcars to derail.
Start 100 fires
Extinguish 10 fires.
Extinguish 100 fires.
Brought to you by Mr. Torgue.
Paint the happy little trees (or other models).