Don't have mages or archers.
Leave the teleport pyramids in Cyseal.
Don't use barter, crafting or blacksmithing AT ALL!
Play as only two characters, no henchment or other characters like Jahan.
NEVER use resurrect. Once a character dies, they are done for good.
Only use the talent to speak to animals (some quests can't be done without this).
Get a giant tank of water near your computer desk with a waterproof keyboard and mouse. Only play the game while submerged in water, you must pause it when coming up for air. If this is STILL too easy, don't use goggles where everything is blurry.
Does this help?