Here is the full list of all 17 Road Defense: Outsiders achievements.
Defeat a total of 10 enemies.
Protect the village 01
Protect the village 02
Protect the village 03
Protect the village 04
Defeat a total of 100 enemies.
Defeat a total of 1.000 enemies.
Defeat a total of 10.000 enemies.
Defeat a total of 20.000 enemies.
Reach Level 5.
Reach Level 10.
Reach Level 15.
Buy the Fusion Bomb.
Buy the laser beam.
Protect the village 00
Protect the village 05
Protect the village 06