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