EXTRA: Carlo Cart Achievement in Vampire Survivors

Along the bottom of this map is train tracks which you can activate  by touching any of the levers along the track. The levers reset too, so feel free to just bounce back and forth between two levers.

There's no way to track how much damage you've done with the train, but this is cumulative across all runs. Personally, I used it about a dozen times and unlocked this achievement in one run.