Complete the campaign on any difficulty
Complete the campaign on hard, recruit all commanders and keep them alive
Kill 1000 vikings
Kill 15000 vikings
Purchase an upgrade for one of your commanders
Fully upgrade one of your commanders
Win an island in the snow
Win an island at nighttime
Win 3 islands on a single turn
Kill all the vikings in a ship, before it reaches the shore
Win 10 islands in a row, without losing a single house
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