This is the comment before there is no more enemy chart.
Enemy 1: imp, discovered in wave 1 with 1 health.
Enemy 2: ghost, discovered in wave 2 with 5 health
Enemy 3: armored imp, discovered in wave 6 with 10 health.
Enemy 4: powerful imp, discovered in wave 8 with 20 health.
The last enemy so far, Enemy 5: armored ghost, discoved in wave 10 with 15 health.