Just a simple mod to make the game harder, player character now have the same initial health but the health bonus from leveling up has been significantly decreased.
The original fomula:
80 + Endurance*5 + (Level-1)*(2.5 + Endurance*0.5)
modded fomula:
80 + Endurance*5 + (Level-1)*(1.0 + Endurance*0.25)

Actually, I'm not sure the extact fomula, that one above comes from Wiki. It somehow does not match the hit point value I tested in game.
However this mod did lower the player HP which is intended.

It will only take effect after at least one alteration on health (e.g. endurance meds, alcohol, equip or unequip an endurance clothing)

Travel safe ... XD