Cores remain untouched
Build 100 Turrets
Sell 30 Turrets
Expand 5 turrets slots
Advance to 5 level
Advance 10 level
Do 5 Double kills
Do 3 Tripple kills
Do 20 Ultra kills
Kill 10000 enemies
Upgrade 50 Turrets
Upgrade any Turret to maximum
Earn 5 skills
Earn 15 skills
Earn 50 skills
Get a first Kill
Kill 250 enemies
Kill 1000 enemies
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