You saw a tutorial of the beginning.
You clear mission once.
You clear mission twice.
You clear mission 4 times.
You clear mission 6 times.
You clear mission 7 times.
Please see ending.
Play once after the ending.
You exterminated 30 Bugs.
You exterminated 120 bugs.
You exterminated 350 bugs.
You defended 5 times from Ghost.
You defended 15 times from Ghost.
You defended 50 times from Ghost.
You get 5 star on stages more than 5 places.
You get 5 star on stages more than 20 places.
You have completed stage 40 and got 5 stars.