6 stages end in a boss fight: Gor'Thok (stage 8), J.T. (stage 10), Sarelgaz (stage 11), Moglok-Hai (stage 13), Lord Blackburn (stage 15) and Vez'nan (stage 18).
5 waves, 175 starting gold, 20 lives, 30-45 gems (6-9 per wave).
8 waves, 300 starting gold, 20 lives, 32-56 gems (4-7 per wave).
10 waves, 400 starting gold, 20 lives, 40-70 gems (4-7 per wave).
12 waves, 600 starting gold, 20 lives, 48-72 gems (4-6 per wave).
15 waves, 700 starting gold, 20 lives, 60-90 gems (4-6 per wave).
15 waves, 850 starting gold, 20 lives, 60-90 gems (4-6 per wave).
15 waves, 1,000 starting gold, 20 lives, 60-105 gems (4-7 per wave).
15 waves, 1,000 starting gold, 20 lives, 120-180 gems (8-12 per wave).
15 waves, 1,000 starting gold, 20 lives, 60-105 gems (4-7 per wave).
15 waves, 1,300 starting gold, 20 lives, 60-105 gems (4-7 per wave).
15 waves, 600 starting gold, 20 lives, 90-135 gems (6-9 per wave).
15 waves, 1,400 starting gold, 20 lives, 90-135 gems (6-9 per wave).
15 waves, 1,400 starting gold, 20 lives, 135-210 gems (9-14 per wave).
15 waves, 1,200 starting gold, 20 lives, 120-180 gems (8-12 per wave).
15 waves, 1,200 starting gold, 20 lives, 120-180 gems (8-12 per wave).
15 waves, 1,450 starting gold, 20 lives, 135-210 gems (9-14 per wave).
15 waves, 1,400 starting gold, 20 lives, 135-210 gems (9-14 per wave).
15 waves, 1,400 starting gold, 20 lives, 180-285 gems (12-19 per wave).
