Here is the full list of all 24 Castles achievements worth 1,000 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Xbox One.
Make 100 repoker
Set 50 dinamite barrels
Get to 5 minutes on Survival Mode
End a VS match with a Speed bar full and the other empty
Break 50 blocks with the hammer
Defeat 20 comrades on VS Mode
Defeat the Girocopter with a Repoker
Break a block of each with the hammer
Kill your partner 20 times with the hammer
Break 9 blocks with the same dinamite
Kill your buddy with dinamite
Send a Repoker to your rival on VS Mode
End a match without completing any challenge
Play a game on VS Mode
Defeat the Gyrocopter
Defeat the Moleman
Kill yourself with dinamite
Get to 2 minutes on Survival Mode
Make a 5 blocks combination
Defeat the Twins
Defeat the Titan
Defeat the Spider
Get to 7 minutes on Survival Mode
Finish the Story Mode