Full list of all 30 Stronghold: Definitive Edition achievements.
The base game contains 26 achievements, and there are 2 DLC packs containing 4 achievements.
Complete the Tutorial
Complete the Economic Campaign
Win a Mulitplayer Game
Win a Multiplayer game against 7 opponents
Kill 10,000 Units
Kill 100,000 Units
Kill 1,000,000 Units
Complete a Siege as Defender
Complete a Siege as Attacker
Complete an Invasion on Very Hard difficulty
Complete an Economics mission on Very Hard difficulty
Make a map and upload it to the Steam Workshop
Complete the Castle Trail
Store 10,000 wood in a single game
Complete The Agent of the Crown
Complete Escape from Snake Island
Get a population of 300
Kill 100 Bears
Amass 10,000 gold in a single game
Store 1,000 weapons in a single game
Complete Act IV of the Main Campaign
Complete Act III of the Main Campaign
Complete Act II of the Main Campaign
Kill the Jester
Store 1,000 food in a single game
Complete Act I of the Main Campaign
Complete Swine's Bay
Complete the 'Home Fires' Economic Campaign
Complete the 'Noble Trail'
Complete Valley of the Wolf