There are 18 achievements worth a total of 200 points
Complete all Jester challenges
Complete all the Duke challenges
Unlock Romeo armour
Unlock all skeletal upgrades
Break gold, silver and bronze doors in a single castle
Get gold in any capitol castle on first attempt
Complete all peasant challenges
Complete all wagon-run levels
Get gold in every castle
Complete a castle with the jewelled armour
Shoot an enemy with the trumpet cannon
Complete all wizard challenges
Unlock the umbrella ram
Complete a castle with full health
Complete the capitol castle in spring
Complete the capitol castle in summer
Complete the capitol castle in autumn
Complete the capitol castle in winter