The pace of the game is bad now. From level 8 area directly to level 15 the change in difficulty is too much

The pace of the game is bad now. From level 8 area directly to level 15 the change in difficulty is too much.

I don’t even bother to kill the fire flinging enemy, its too costly in potions.
And if you have to fight several lv 15 enemies including him, is a nightmare.