ACHIEVEMENT - HOW TO UNLOCK Empire Level 1 (5 points) - Beat Level 1. Empire World 1 (10 points) - Beat World 1. Empire World 2 (10 points) - Beat World 2. Empire World 3 (15 points) - Beat World 3. Empire World 4 (20 points) - Beat World 4. Beastie Combo (5 points) - Get a Beastie Combo by shooting a certain amount of only 1 type of beastie. All Beastie Combos (30 points) - Get all the Beastie Combos by shooting a certain amount of each of the special beasties. 2x Multiplier (5 points) - Get the multiplier to x2 in Single-Player. 10x Multiplier (25 points) - Get the multiplier to x10 in Single-Player. Millionaire Twins (20 points) - Both players get a million points each in Multiplayer. 10x Multiplier Twins (20 points) - Both players get their multiplier to x10 in Multiplayer. Black Belt Grandmaster (35 points) - Beat all 16 levels on Black Belt in Single-Player.