Finish the first level.
Kill 600 enemies in total.
Kill 1,200 enemies in total.
Kill 1,800 enemies in total.
Achieve 5000 score in 2 minutes.
Finish level 4.
Beat 50 enemies within 100 seconds.
Achieve level 8 in 15 minutes.
Get 3.0x combo.
Finish level 12.
Finish level 4 within 5 minutes.
Finish level 1 and level 2 without getting hit.
