Steel Diver
Unlock Chapter 6:
Finish chapter 1-5 with all subs.
Unlock Chapter 7:
Finish chapter 6 with all subs.
Unlock Expert mode:
Finish all chapters with all subs.
Steel Diver
Unlock Chapter 6:
Finish chapter 1-5 with all subs.
Unlock Chapter 7:
Finish chapter 6 with all subs.
Unlock Expert mode:
Finish all chapters with all subs.