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