Blood Code
To enable blood, go to the OPTIONS screen, highlight "EXIT"
and press A+B+C+D simultaneously.

Boss Code
This cheat works only on two-player mode. At the fighter
select screen, hold Start and move the cursor over to the
following characters starting at Haohmaru: Genjuro, Basara,
Kyoshiro, Ukyom Rimruru, Haohmaru, Shizmarum Nakorurum Hanzo,
Amakusa, Gaira, Galford, Shizmaru. With the cursor on
Shizmaru, wait until the timer reaches 03 and then
simultaneously press A and B. If you did this correctly,
Zankuro's picture will appears in the middle of the bottom
row of characters.