Did the first epic boss at level 16- just make sure you have at least one purple pentagon waiting at the beginning and 5000+ mana to withstand 1 hit from the boss. When he comes and goes past your first few towers, take your purple pents and station them at towers so its always hitting him. Second run should be enough to kill him, if not bomb him till his dead.
Load up "easy" mode and score 30,000 points, and destroy the king in under 20 seconds
Goal Checklist:
30,000 points (easy mode)
King killed in under 20 seconds
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Im sure the badge isnt hard, but i dont remember playing this. I musta ragequitted.