Here is the full list of all 25 Crush Your Enemies achievements.
Lose multiplayer battles in 5 different locations.
Crush 20,000 Generian fighters.
Play 100 multiplayer battles.
Collect 500 pints of beer.
Impale 123 of your enemies' heads.
Take over all the farms and survive until the enemy has no food left.
Win 10 multiplayer battles.
Win a multiplayer battle.
Crush an enemy group using Warriors and Archers with Wizards to support them both.
Complete Fuzgut The Destroyer's campaign.
Kill 40 enemies at once with your Spiky Mine.
Crush 10,000 Generian fighters.
Use the Dummy Barbarian 10 times.
Collect 200 pints of beer.
Impale 50 of your enemies' heads.
Complete Brog The Barbarian's campaign.
Use the Shroom Moonshine 10 times.
Complete 3 objectives in 4 different battles in a row.
Collect 50 pints of beer.
Impale 20 of your enemies' heads.
Crush 1,000 Generian fighters.
Collect your first beer.
Lose a battle.
Win the first battle in Generia.
Impale 3 of your enemies' heads.