Unlock Ninja Gaiden 1

Give 50 scarabs to Maramusa

Unlock Ninja Gaiden 2: The Dark Sword of Chaos

Use normal mode and get Master Ninja on each level

Unlock All Movies (FMV's)

Beat the game using normal or hard difficulty

Unlock New Outfit

Beat the game using normal or hard difficulty then while selecting "New Game" Hold the L button

Unlock Plasma Saber

Beat the game using normal or hard difficulty

Unlock Plasma Saber Mk 2

Beat the game using Very hard difficulty

Pass Some FMVs

To skip past some of the movies press Start, A, Start

Super Attack

The special attack is done by pressing B + Y

Unlock Very Hard Difficulty

Beat the game using normal or hard difficulty

Beating the first boss

On the "Ninja Fortress" level-(the first one) Go along on your merry little way until a Movie shows with a guy named Murai, who wields Nunchakus. He'll show off to you in the cut scene by doing some fancy tricks. He looks hard but you only have to take half of his HP! Once the battle starts hold L to block the blows. Guide him to a wall, then jump on the wall and jump off and press Y while in the air. you should bounce off the wall and slice into Murai. The second you touch the ground jump back on the wall and repeat until you beat him. (Note:He may be a lot more muscular than you, but he's significantly slower than you, so don't worry about him hitting you while you're jumping back on the wall)

How to beat 2nd boss

To beat the second boss you need the art of inferno. you just run up to him and jump and hit Y to stab down at him and keep repeating the art of inferno should be equipped if not then equip it it should automatically work then you might have to slice a bit more until you defeat him.

Beating 3rd boss

When you get to the hatch and you see the ugly dude. 1st he well charge up his gun. when he does that press a to jump when your in the air press y to use your attack (best to attack from back. he might shoot you. when your done with that he well try to hit you. so do a back jump by pressing down a. when he shoots just run around him. that's how I beat him.

How To Beat Final Boss

The final boss in the game is Murai, the guy that you have to fight at the start. He is actually very simple. First you should have one great spirit elixir. You should also have a Devil Elixir to restore your Ninpo. Use either the frost Ninpo or the Lightning Ninpo . Murai will start with the Dark Dragon sword pointing down. When he turns the sword upright, jump towards him and press Y. Ryu will Flash blue and strike through Murai, taking away about a tenth of his health bar. After you do this, strike him twice with X and then use your Ninpo. He will back away and hold the sword upright. Attack him again and repeat this about ten times to beat him. It should only take you two tries at max.

Dark Dragon Blade

Beat the game once then u play the game again up 2 chapter 13.Its on the second floor in the Muramasas shop. The dark dragon is pretty slow and it doesn't have lots of techniques.

Get Explosive Shurikens

In chapter  6  the  monastery when you enter  there  will be some stairs go through the stairs and look  for a door  and  there will be some enemies  defeat  them  and a  gate   will open  go   up  and  there  should be  some desks  with  glass break  them and there  should  be  the  explosive shurikens

The Izuna Drop

The Izuna Drop is all about timing. Press X once you find a gap in the enemy's attack, and shortly after press Y to launch them into the air. after this press X three times-(you'll hear the slashes-1-2-3)then on the 3rd slash press Y to grab the unlucky soul to pile drive him into the ground in a raging twister! (make sure not to press X four times while he's in the air-you'll perform a different move if you do. they're both effective but the Izuna drop is a bit more effective and A LOT cooler looking! Although the Izuna drop WONT work on bosses! but pressing X four times will!)

Zombie Strategy

When fighting zombies the easiest thing to do is jump towards the zombie and press Y, this will usually cut their head off if not, try it again (only works with Vigoorian Flail and Level 2 Dragon Sword) without the head the zombie can't see you, therefore, you have a much greater chance of not getting hit, plus, it can't do that vicious biting grapple move.

Mysterious Cracks In The Walls

If you've played enough you've probably ran into a wall with mysterious looking cracks in the wall.  If you've obtained Incendiary Shuriken or the War Hammer you can break these cracks in the wall to reveal a new area of the level.  Some levels have you go through them before you can actually reach what's on the other side, but don't worry because later on you will be able to go back if you play through the game.

Fighting Dark Spider Ninjas

When fighting these ninjas, it works best when you block and use a counter attack. The Y button one works best in my opinion. You may still be hit however but not usually.

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