Codes
Full HP

Japan version only
Code                    Effect
Press 'Up' + 'Start' during the game	Restore HP.


Passwords
Act Passwords

M - Medicine potion, P - Power-up, R - Ryu, S - Shuriken
Password                Effect
SRMP                    Act I
SMRS                    Act II
PSMR                    Act III
MPSR                    Act IV
RSMP                    Act V
RRPM                    Act VI
MPRS                    Act VII


Glitches
Reappearing 1-up glitch

In Stage 6-2B, grab the 1-up, backtrack to 6-2A, then return to 6-2B. The 1-up will have reappeared, along with all other power-ups in the room. You can repeat this process until the timer runs out.

In Stage 7-2D, grab the 1-up, backtrack to 7-2C, then return to 7-2D. The 1-up will have reappeared, including all other power-ups in the room. Again, this can be done repeatedly until the timer runs out.