Here are some cheats and tips for the game Bloody Wolf.
Level Select:
Press II, I, I, II, I, II, II, I at the title screen. Then press the following for the corresponding level.
Level Code
Level 1 Up
Level 2 Up/Right
Level 3 Right
Level 4 Down/Right
Level 5 Down
Level 6 Down/Left
Level 7 Left
Level 8 Up/Left