Here is the full list of all 19 Rock of Ages achievements.
Win 10 online War games.
Land a projectile on some TNT to produce a shockwave combo that hits your enemy.
Win a War game using the Cube.
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.
Earn more than 7000 gold in one match.
Win a match with your gate unscathed.
Win a match without destroying any of your adversary's units.
Win an online War game
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 using the Snowball boulder.
In SkeeBoulder, land your Boulder in the maximum multiplier.
Hit the castle gate with the fireball powerup.
Break off the first layer of your adversary’s boulder.
Complete the tutorial level and escape from the underworld.