Cheat mode:
Hold L1 + R1 + Triangle + Square + Circle + X and press Start during game play. 
This will unlock options for "Invulnerability" and "Level Warp". Note: After using 
the "Level Warp" option, press Circle to resume the game. 

Level 10 character:
Hold L1 + R1 + Triangle + Square + Circle + X and press L2 during game play. 
Your current character will now be at level 10, with 45 feat points and 500,000 
gold. 

Duplicating items:
Get next to a save point. Save your game. Drop the items you wish to duplicate. 
Reload your character. Pick up the dropped items. Repeat this as may times as 
desired. You will have the number of items you had when you saved plus the ones 
that you picked up after reloading.

This trick requires at least two characters. First, save the game. Then, have one 
character drops all their items. Next, have the other character pick up all the 
items, sell them, then buy whatever desired. You can then reload the character 
that dropped all their items. Note: In two player games, gold is shared; if you 
reload the character after selling all the items it will reset the gold to the saved 
amount. If playing in single player mode, start a second game and save it. Then 
load the saved game you want to duplicate in. Import the saved character from 
the other game into the game you are playing and save. Then, repeat the 
process. When done, export the second character and continue your game. Note: 
This works well for the workshop. Before selling duplicate items, check to see if 
they have gems. You can break them out to have gems to work with that are not 
for sale at first. Also, buy weapons that have gems and break them for extra 
gems. 

If you have items that you want to duplicate, go to a battle area with a save 
location then save the game. Drop the items to be duplicated on the ground. Then, 
select "Load Character" and reload your character from the same save. Pick up 
the item and you should now have two of them. You can use this to make a lot of 
money by duplicating gems and runes. Sell them, then duplicate them again and 
repeat. Then make a big item, such as armor with sixteen runes, sixteen gem slot 
one, and sixteen gem slot two. Upgrade the item, duplicate, then sell it. 

Defeating Green Slimes:
When battling the Green Slimes in the Sewers, use weapons that have large 
damage attacks, such as swords and maces. When attacking the slimes, hang 
around the edge of a corner and let them come to you. Then, ambush them when 
they are close enough to your character. This is the best way to battle in the 
Sewers, and it saves your health potions.

Defeating the Harnak:
To defeating the Wayfare Inn Boss, make sure you have a ranged weapon. First, 
take out the underlings. Do not hit the Boss; he will not attack you until you attack 
him. Once all the Goblin underlings are dead, you can attack Harnak. When he 
starts to chase you, run towards the tables on the right. Jump to get over them. 
Once on the top side of the tables, line up on the corner closest to the fireplace. 
This should get Harnak stuck by the bottom table, leaving you free to hit him with 
your ranged weapon.

Defeating Luvia's beasts:
When fighting in Luvia's Laboratory and you get to the end where she sends two 
beasts to attack you, only go forward slightly. One of the beasts will chase you. 
Stay in the bottom portion of the room and use the crossbow on it. This is easier 
with two players. Eventually it will die and then you can defeat the second one in 
any way desired.

Entering the Elemental Planes:
When entering the Elemental Planes think of where your going and prepare 
yourself as follows. Buy at least 200 health potions. These areas are not easy and 
you will die very fast if you do not have enough of them.

Elemental Air: 
Use your normal equipped weapons and armor for this area. Also save all the way 
through it. 

Elemental Earth: 
For this area, you will need to buy leather armor and wooden clubs with a damage 
of 5-8. This is due to the many of Rust Monsters on this plane. After you get to the 
entrance of the Earth Foundation, put your regular armor and weapons back on 
and tear the Boss apart. Go after the bowmen first or you will not survive. 

Elemental Water: 
Use regular equipment. Nothing special is required for this plane. Make sure you 
save the game before you go into the foundation. 

Elemental Fire: 
For this plane, if you feel bold and want to have some fun, upgrade weapons with 
the Aquamarine stone for the freezing ability. 

Easy experience:
This trick works with all characters who are able to buy experience from their NPC 
associate, such as the cleric and the church of Helm and necromancer with the 
Oglulkluer person. Make a lot of gold (use the duplicate item trick if desired). Save 
the game. If you already used up your NPC experience you will need to start a 
new game. However, if you have not, save. Spend all your money on experience. 
Save a new saved game. Load your old saved game before you spent your 
money on experience. Load your character from the saved game after you spent 
the money. Spend more money on experience and repeat as many times as 
desired. 

Along with the item duplication trick, you can make your character as powerful as 
desired. Before you have spoken to the person who gives you experience for 
talking to them (for example, when playing as Ysuran it is Omduil), duplicate items 
to get a lot of gold. Then, save your game in two slots. Speak to him as many 
times as you can to gain experience, then save on one of the slots. Exit to the 
menu, then load the duplicated original from before you bought the experience. 
With that loaded, import your character from the newer file. You will have the 
experience, but you can buy it all over again. Always save to the newer file, load 
the older game, then import the newer character.

Easy gold and experience:
In some situations, your character may be awarded a prize of 1,000 gold and 
1,000 experience points. However, before you claim a prize, save the game and 
get your award. Load a previously saved game before you get your gold and 
experience points. Then, load the character that already has the gold and 
experience points. Keep repeating this processes to get a lot of gold and 
experience points.

Increase rank:
Each character has their own person to talk to (except Dorn). Most of the time, 
these contacts ask for money. When you get a chance, pay them the amount of 
money they ask for. In Act 3, the character's contact will ask them to do one final 
mission. Do so and your character will earn a new rank that makes them even 
more powerful. Dorn also gets this, but not until Act 3. 

Mace upgrades:
When you reach the point where you have to fight Trolls at Skull Gorge, upgrade 
your weapons. The best way to do so is to have two maces that can be upgraded. 
When you upgrade, use these stones for the weapons. With these weapons in 
hand as you enter Skull Gorge, you should have no problem defeating the Trolls 
that are waiting there.

Fine Lite Mace: 1 Rune Stone 1 Jancinth and 1 Jade. Combine all these on this one 
mace and you will have a Mace that will have the Fire and Acid ability and also 
have a +1 rating as well (Acid damage +1-4 and Fire damage is +1-8). 

Fine Morning Star: 1 Rune Stone 1 Ruby. Combine these to create a +1 weapon 
that will bleed 1 round per level of the character using it.

Unlock Drizzt Do'Urden:
Successfully complete the game under any difficulty setting. 

Unlock  Artemis Entreri:
Successfully complete the game under the extreme difficulty setting. 

Unlock Extreme mode:
Successfully complete the game under any difficulty setting.