Unlock the following characters by performing the corresponding tasks:
CHARACTER - HOW TO UNLOCK Cruz - Go to the small area near the BF 23 exit. Another exit will appear. Go there, and enter BF 23.5 to find Cruz. Mistel - Search both villages in BF 13 to go to BF 14 I/II and find Mistel. Pamela - On the Hard difficulty, go to BF 23 or BF 24, and put Nietzsche next to her. Russell - Go to BF 20, move left, and save Flone from Aegina. Then, place anyone next to Russell in BF 21.
Complete the game to unlock the "Extra Contents" option, "Hyper Speed" option, and Hard difficulty. To change the speed, turn on the "Hyper Speed" option, then press R for high battle speed. Press R again for hyper battle speed.