CheatOgre.com: Lost Kingdoms

Easy experience
To get experience early in the game, complete the first two stages (the starting castle plus the training stage). You should now gain access to the Apothecary and Blessoon. Go to the Apothecary and talk to Guru. After speaking with her, Dahl-Nok Valley will become available. Go to Dahl-Nok Valley and go to the right. There should be bee hives there. Select them to fight the Giant Bees. To kill them easily, send out your Man Trap. Have it attack the Bee once, then call it back. Finish off the bee with any desired character to gain the experience. Note: Bees cannot be captured. Each time you kill a Bee, you should gain about 100 to 140 experience. After killing about three Bees, return to the main map then go back and repeat until you get the desired amount of experience.

Early strong or rare cards
An easy way to get an extremely rare and strong card early is to use Lizardman. Get him 6000 experience then transform him into the Red Dragon. The Red Dragon is extremely strong, but may cause you to lose HP early in the game since you have a inexperienced character. Another rare card to get early in the game is the Hydra. In order to get the Hyrda, you need to use your Man Trap and gain sufficient experience to turn it into the Catoblepas. Next, use the Catoblepas and get sufficient experience (about 2000) and it can transform into the Hydra.

Capturing enemies in a card
If you see a powerful enemy that you like, get its life down to about 2 or 3 then hold L and either A, B, Y, or X to capture it in a card. Note: Use a weaker card so you do not waste any good ones.

Easy money
A very easy way to gain money early in the game is to go to Blessoon as soon as it becomes available. Catching most of the creatures and selling them will give you more than enough money. The easiest way to get money is to catch and sell the Rats. You will get about 40 gold per rat sold to the Apothecary. The most expensive card, the Guro only costs about 210 gold.

Unlimited use of a card
Take a very powerful summon card, such as a Red Dragon or a White Tiger. Put it in a small deck including two or three copies of the card, and four Sea Monks. Go to a difficult level. Use the card, restore it with a Sea Monk, then use it again, then use another Sea Monk. It should restore the Sea Monk you already used and the powerful card. This allows you to use the same card repeatedly, even if you only have one of it.

Get to Dahl-Nok
When you complete Blessoon, you can go talk to Gurd at the Apothecary. She will tell you of a place with giant bees. You must eliminate them in Dahl-Nok Valley to complete the level.

Tomb stone combination
In the Burial Ground, the tombstone combination is "A,C,B,D" as follows.

              IIIIIIIIIIIIIIIIIIIIIIIIIII (gate)

               a>     #               #<b
              
                c>   #                 #<d

Faeries
in some levels there are blue things that resemble comets with a tail that fly around. They are called "Faeries" and they usually initiate a battle. However, sometimes there are special ones that make your health 100/100. However, both types look alike.