Kill 1,000 enemies in total.
Kill 5,000 enemies in total.
Kill 10,000 enemies in total.
Kill 30,000 enemies in total.
Achieve 100 kills in stage 1.
Achieve 500 kills in stage 1.
Achieve 1,000 kills in stage 1.
Achieve 2,000 kills in stage 1.
Achieve 3,000 kills in stage 1.
Survive for 5 minutes in stage 1.
Survive for 3 minutes in stage 1.
Achieve 100 kills in stage 2.
Achieve 500 kills in stage 2.
Achieve 1,000 kills in stage 2.
Achieve 2,000 kills in stage 2.
Achieve 3,000 kills in stage 2.
Survive for 3 minutes in stage 2.
Survive for 5 minutes in stage 2.
Achieve 100 kills in stage 3.
Achieve 500 kills in stage 3.
Achieve 1,000 kills in stage 3.
Achieve 2,000 kills in stage 3.
Achieve 3,000 kills in stage 3.
Survive for 3 minutes in stage 3.
Survive for 5 minutes in stage 3.
Achieve 100 kills in stage 4.
Achieve 500 kills in stage 4.
Achieve 1,000 kills in stage 4.
Achieve 2,000 kills in stage 4.
Achieve 3,000 kills in stage 4.
Survive for 3 minutes in stage 4.
Survive for 5 minutes in stage 4.