Here is the full list of all 19 Rock of Ages achievements.
Win 10 online War games.
Win an online War game
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 without destroying any of your adversary's units.
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.
Win a match using the Snowball boulder.
Destroy a flying ship.
Win a match with your gate unscathed.
Earn more than 7000 gold in one match.
In SkeeBoulder, land your Boulder in the maximum multiplier.
Destroy your adversary’s boulder.
Hit the castle gate with the fireball powerup.
Break off the second layer of your adversary’s boulder.
Break off the first layer of your adversary’s boulder.
Score a direct hit on an enemy boulder with the Castlepult.
Complete the tutorial level and escape from the underworld.