Id GroupId LevelId[0] LevelId[1] LevelId[2] LevelId[3] UnlockSpend Name Icon 1 1 1001 1002 1003 1004 25 Kill Enemies, Recover Orbs Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon21151.png 2 1 1101 1102 1103 1104 25 Combo Blast Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon22070.png 3 1 1201 1202 1203 1204 50 Collateral Damage Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon32101.png 4 2 3201 3202 3203 3204 25 Medusa's Curse Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon12112.png 5 2 3101 3102 3103 3104 50 Exploding Corpse Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon21063.png 6 2 3001 3002 3003 3004 100 HP Reduction Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon33103.png 7 3 2001 2002 2003 2004 50 Black Hole Anima Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon32161.png 8 3 2101 2102 2103 2104 100 Frozen Domain Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon21233.png 9 3 2201 2202 2203 2204 150 Indomitable Tyranny Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon32001.png 10 4 4001 4002 4003 4004 100 Mission Extension Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon12123.png 11 4 4101 4102 4103 4104 150 Extra Strike Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon22060.png 12 4 4201 4202 4203 4204 150 Laser Support Assets/Product/Texture/Image/UiBabelTower/UiBabelTowerChallengeIcon21073.png