Here is the full list of all 20 Train Crisis achievements.
Unlock Far West era
Blow 4 trains
Reach a cow with an explosion
Unlock the modern era
Unlock industrial era 2
Unlock Far West era 2
Unlock modern era 2
Achieve 3 stars on 6 levels
Achieve 3 stars on 24 levels
Achieve 3 stars on 100 levels
Play 10 tries
Play 100 tries
Play 500 tries
Achieve more than 10,000 coins
Blow a car
Finish a level with no passengers in the train (only for levels with passengers)
Finish a level collecting more coins than requested (only for levels with banks)
Spend all the tries
Finish a level with all the trains on the wrong station
Finish all levels