Press Z, R, L, B, X, Y at the main menu. A voice will say "Go cheese" to confirm correct code entry. Start a new game to begin with the Soul Reaver and Iron Armor.
easy health
Immediately after clearing a checkpoint, if you are low on health, reload the game. You will be back exactly where you just were, except your health meter is now completely full.
Easy kill
After defeating Sebastian and acquiring the Dark Gift Charm, use it on a enemy that you cannot charm. It will appear as if they have a headache. Quickly run towards the enemy and attack. Repeat this until the enemy is killed.
Wharves Jumping to Rune Knights
Around the middle of the Wharves chapter is a place where you have to constantly jump across a river with one Rune Knight in each area you jump to. Before you jump, hit the Rune Knight twice with Telekinesis. When you jump, try to make the jump indicator red so that you hit the Rune Knight. While he is on the ground, draw your weapons or get your claws out. Immediately when he stands, start attacking and catch him off guard. Two hits should be required with bare claws and only one hit with some sort of weapon.
Defeating the sarafan lord
When the battle starts, the most important thing to do is to locate him. When you do, go to the platform across from him so that there is a walkway between you. When he fires the energy orbs, jump above the first one and stay down on the second. Then, jump again on the third. When he is over you will have seconds to use your Telekenisis on him. When you use it, immediately switch over to jump and knock him off the ledge. You cannot be too close to him when you try to jump or he will teleport away. When he has the Soul Reaver out, switch over to Immolate. He only has one set of attacks. He hits you five times, then uses the magic red sword. Block his five attacks, jump back from the sword, and use Immolate on him. This is the only way to hurt him here. Do this three times to continue. When you get the Soul Reaver, he still has the same attack pattern (five hits then the magic punch). Block the five hits and jump straight up in the air to dodge the red hit. When you get down, immediately use the Soul Reaver. You can only hit him one time per round of attack. It will be awhile before you can defeat him.
ALSO:When Kain has the Soul Reaver and the Sarafan Lord does the five hits, dodge the magic hammer blow. Then, grab the Sarafan Lord and thrust the Soul Reaver through his chest. You will defeat him in less than a quarter of the time it would take with one hit on each turn.
Defeating magnus
Magnus is fairly simple to defeat. When he is standing in the middle of the giant fountain that is surrounded by statues, run and hide behind the closest one. He will try to burn you, but will hit the statue. Jump out and shoot him with Telekinesis very quickly. Once he falls into the water, run behind the next statue until he tries to burn you again and repeat the process until he leaves. It should only take three times. In the next room you will see giant statues holding scythes. Magnus cannot burn you anymore, but he will charge into you. Do not bother hitting him. It does not do any good. Get in front of one of these statues and get him to charge you. When he does, dodge him and he will run into the scythe, breaking it. Once it breaks, you will see a glowing telekinetic switch. Jump onto one of the boulders or platforms so Magnus cannot get you, and shoot the switch. The statue will open its arms. Do that to all of the statues and the gigantic statue in the middle of the room will be put back together. Get Magnus to charge into the base of the weapon that the statue is holding the same way as before. When it breaks, make him charge into the base until the statue falls and crushes him. Just stand next to it and shoot Magnus with Telekinesis. That should make him charge you.
Defeating fastus
At first, you are in a small circle room with two doors. All you have to do is face the Boss and hold Attack + Block. Wait for him to attack. He has four different types. In the first, he does a five or six hit combo. In the second, he can punch, then kick. In the third, he will just kick. In the fourth, he jumps back with a red glow and lunges forward. When he uses his first type of attack, wait until he punches a third time, then release your block and attack. Repeat this about five times to continue. In the next room you must use the mist form to sneak up to the furnace and burn him. To do this, you must first find the two furnaces with fog in front of them. They are on opposing sides. When you first enter the room, one is to the left and the other is to the right. Run around until he jumps to one of the two, then sneak to the corner and turn mist on. Slowly walk to the switch and fry him. Finally, he will jump around and lunge at you. Just run around until he lunges. This will cause him to eventually fall. Run up to him and use a combo. This must be done about three or four times in order to defeat him.
Instant death
To do an instant death attack, you must have mist in the area of the person. Enter the mist using your dark skill ability "Mist", then sneak up behind them. A skull will appear. Use this time to attack and you will cause instant death to the enemy. Note: If you run into the front of the person, they will immediately attack.