Here is the full list of all 28 Battle of Hořice 1423 achievements.
Collect all fish.
Find the location of the Svarta jump.
Collect all valuables from the defeated enemy.
Finish at least one level together with someone else.
Finish the future circuit of Gustav Havel.
Collect all sandstones.
Collect all shields.
Finish any level in under 30 seconds.
Kill an enemy.
Collect all swords.
Win the battle of Hořice.
Collect all keys.
Collect all potions.
Collect all gears.
Collect all apples.
Collect all coins.
Collect all hams.
Collect all breads.
Collect all barells.
Collect all pintas.
Collect all hay bales.
Collect all horseshoes.
Collect all beehives.
Collect all maps.
Collect all flowers.
Collect all wood.
Collect all candles.
Burry all defeated soldiers.