Soviet Strike

Level Codes from Saturn Boy
2. Black Sea: KRAZHA
3. Caspian: VERBLUD
4. Dracula: YADRO
5. Kremlin: PERIWOROT

More Codes from Bruce Kwan
At the password screen, enter the password for the stage you want to play. Then press C button. Then enter the following passwords:
1.GABRIEL---4X ammo power
2.COLDPIZZA---Unlimited fuel
3.VOODOO---4 extra lives
4.FREEBIE---extra life

You can enter all the passwords for all the results in that stage you play.(Pressing C will allow you to enter another password. Do not press start but only after you have entered all the passwords you want).Do not enter password 3&4 together.If you enter 4 after 3, you get only 1 extra life. Best is to enter passwords 1,2&3. Also, for password 1(unlimited fuel),the fuel will countdown from 100 to 0, after which it goes back to 100.Do not think that the code is not working.

Half Fuel Consumption from Postman
ALBATROSS at the password screen.

Unlimited Ammo from Perry Lai
Enter password ADRENALINE for unlimited ammo

Tip from Lewis Henderson
Input:
1.Gabriel
2.Coldpizza
3.voodoo
4.freebie
5.adrenaline
In order and attemps will never drop below 4, no matter how many times you die.