Here is the full list of all 19 Rock of Ages achievements.
Win 10 online War games.
Win a War game using the Cube.
Land a projectile on some TNT to produce a shockwave combo that hits your enemy.
Get a gold medal on all maps in Time Trial mode.
Beat the game in Story mode.
Find all the keys scattered throughout the levels.
Destroy a flying ship.
In SkeeBoulder, land your Boulder in the maximum multiplier.
Win a match with your gate unscathed.
Earn more than 7000 gold in one match.
Destroy your adversary’s boulder.
Break off the second layer of 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
Hit the castle gate with the fireball powerup.
Break off the first layer of your adversary’s boulder.
Win a match using the Snowball boulder.
Complete the tutorial level and escape from the underworld.