Minotaurs have strong legs, if you didnt notice.
Their jump creates the "oh shit!" reaction and the following smash attacks enhance it. It tells the player you aint in the Kansas anymore, that Underdark will require being careful and more advanced tactics and behavior then just rushing the enemy.
The denizens are especially dangerous - and that must be shown in palpable ways.
That needs to be maintained.
Once the game is done there will be an easy difficulty so you and others that complain about this can play on easy or switch to it when things get hard.
The only thing i would request is to add a third Minotaur.