Here is the full list of all 19 Rock of Ages achievements.
Win 10 online War games.
Hit the castle gate with the fireball powerup.
Earn more than 7000 gold in one match.
Destroy a flying ship.
Land a projectile on some TNT to produce a shockwave combo that hits your enemy.
Win a match using the Snowball boulder.
Destroy your adversary’s boulder.
Score a direct hit on an enemy boulder with the Castlepult.
Break off the second layer of your adversary’s boulder.
Win a match without destroying any of your adversary's units.
Win a War game using the Cube.
Win a match with your gate unscathed.
Win an online War game
Break off the first layer of your adversary’s boulder.
In SkeeBoulder, land your Boulder in the maximum multiplier.
Complete the tutorial level and escape from the underworld.
Find all the keys scattered throughout the levels.
Beat the game in Story mode.
Get a gold medal on all maps in Time Trial mode.