ACHIEVEMENT - HOW TO UNLOCK Yars' Revenge (20 points) - Defeated Queen Raktamalina. Multiple-Madness (20 points) - Get your multiplier above 100 on Normal or Hard. Reaper (15 points) - Beat a level in Hardcore Mode without dying. Hardcore (30 points) - Complete all levels in Hardcore Mode. Bee (25 points) - Beat the game using only the pulse laser on Normal or Hard. Cockroach (25 points) - Beat the game without dying on Normal or Hard. Gnat (10 points) - Beat a level without taking damage on Normal or Hard. Mosquito (10 points) - Kill (1000) enemies with missiles. Wasp (10 points) - Kill (500) enemies with the railgun. Beetle (15 points) - Beat a boss using only the pulse laser on Normal or Hard. Boom! (10 points) - Kill 20 or more enemies in one shot with the Zorlon Cannon. Cloned (10 points) - Beat every level in Co-Op Mode.