PAR codes found for Shadow Dancer - Genesis

[BigBossman]

Most enemies can't walk or move backwards
000486: 8508
Turn this code off when you get to the bosses. The 1st stage boss will jump backwards & will end up going off the screen. This will mean you can't beat him.

Enemies & Hostages constantly respawn
01223A: 0007
NOTE: Be sure to only rescue 1 hostage. Rescuing 1 hostge will clear the number of hostages you need to rescue before leaving the stage. If you rescue more than 1, it will max out the number of hostages needed to rescue. If that happens, you won't be able to leave the stage.

Different Enemies on Stages
012240: 000?
NOTE: This will change which enemies appear on which stage. I have used values 0 - 3 & each one affects the stages differently. This code is best used with an all hostages are safe code because there are no hostages on the stage. The bonus stages will show enemies that can't hurt you as you are falling. There are no jumping ninjas on those stages.

[BigBossman]

All hostages are safe / rescued
FF13DF: 0000

I took these off the database, converted them to PAR, & tested them. They all work:

No enemies
00874C: 6830

Gunmen shoot enemies instead of bullets
0011C0: 2000

Gunmen always shoot to the right
00ED40: 0000

Ground doesn't open up / screen doesn't shake on stage 1-2
00ED40: 6000

[BigBossman]

Infinite Ninja Magic
FF13E4: 0001

Infinite Ninja Magic / Magic Modifier / Weird effects
FF13E5: 00??
NOTE: This has some strange effects to it. If you try to perform magic that is not supposed to be on the stage you're on, it will be glitchy. In order to use the magic turn the PAR off & press the A button. You'll perform the magic that you normally wouldn't have on that stage. Its recommended that you don't use values 01 - 03 on the boss on Stage 1-3. If you use value 1F, keep the PAR on, you'll hear the sound, enemies will continue to move around, & when you start moving again, you'll be untouchable for the rest of the level. Note that you won't be able to use your close attacks. The enemy boss on stage 1-3 won't be able to breathe fire.
00 - Nothing
01 - Flame Magic
02 - Whirlwind Magic
03 - Fireball Magic
1F - Strange effects; affects boss on stage 1-3; makes you untouchable for the remainder of the level or until you die (falling in pits)

Always get a perfect on all bonus stages with a 3-up bonus
FF102F: 0032

Always get a perfect on all bonus stages with a 16-up bonus
FF102F: 00FF