When the level description appears, hold Z+R+L. Repeat this at the beginning of every level.

Spell the word FLIK in training mode to receive a life. You can do this as much as you want! When you have got all you need, start a new game and have fun!

Go to the ant hill from the main screen. Then, hold C-Up + C-Down + C-Left + C-Right + Z and press R. If you entered the code correctly, an arrow will appear at the bottom of the screen.