Easier hard or insane mode: 

Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "icewind.ini" file in the game folder. Change the "Suppress Extra Difficulty Damage=0" line to "Suppress Extra Difficulty Damage=1". This eliminates the 150% and 200% increases to monster damage (and experience points) under the hard and insane difficulty settings. 

CheatMode: 

Press Ctrl + Tab to display the console window and then enter the following codes:

 GETYOURCHEATON:ExploreArea();

   Show full map. 

 GETYOURCHEATON:Hans(); 

   Teleport party to pointer. 

 CHEATERDOPROSPER:SetCurrentXP([number]); 

   Give selected characters indicated EXP.

 CHEATERDOPROSPER:AddGold([number]); 

   Add indicated gold to party total. 

 CHEATERDOPROSPER:Midas(); 

   Add 500 gold to party total. 

 GETYOURCHEATON:FirstAid(); 

   5 healing potions , 5 antidotes, and 1 Scroll Of Stone To Flesh. 

Note: Back up the original files before proceeding with the following set of codes.

 Use a text editor to edit the "icewind.ini" file in the game directory. Add the line "Cheats=1" under the "[Game Options]" section. Start the game and press [Ctrl] + [Tab] to display the console window. Type "GETYOURCHEATON:EnableCheatKeys();" (case-sensitive) to enable cheat mode. Then, enter one of the following codes while playing a game: 

[Ctrl] + J - Move selected characters to pointer position. 

[Ctrl] + R - Heal or resurrect the selected character or portrait. 

[Ctrl] + Y - Kill selected monster or NPC with no EXP. 

[Ctrl] + 4 - Display trigger polygons; shows traps. 

[Ctrl] + 9 - Display character bounding boxes.