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