To start you need to have the "EPF recruitment" postcard sent to your penguin's mail. When you have received the postcard on Club Penguin you need to click "go there" to get to the Everyday phoning facility.
Now that you have arrived at the EPF everyday phoning facility click on the ringing phone. Then a red and white target will appear to the upper right of the phone stand. Now throw a snow ball at the target in the everyday phoning facility:
Now its time for your first test to become an EPF agent on Club Penguin. Waddle over to green square in the lower right of the room.
When the screen in the middle of the room says "go" run as fast to the red square in the lower left of the room shown here:
The second test is the stealth test. The first thing to do in the second test to become an EPF agent is to hide from camera one. Hide behind the column in the lower right of the room shown here:
As soon as you have hid throw a snowball at camera two so it can't find you as well. Here is what it will look like on camera 2 when you have thrown the snowball on it:
The last test to become an EPF agent on Club Penguin is the problem solving test. You will see a cage trap being prepared in the room, the screen in the middle of the room says to step on it. Do not step on it. Instead throw a snow ball on the power box on the lower right column shown here:
If you have followed this guide you will have gotten a perfect score and you'll be an EPF agent. You will also be given a EPF spy phone which you can to field-ops and get EPF messages from Gary, rookie, and others on the EPF.
Congrats on becoming an EPF agent on Club Penguin. Have fun being an EPF agent and protecting the island of Club Penguin.