I didnt understand, why second weapon and alternative attack? It can be played with autoaiming and holding LMB (better it will be with autofire I think)
Oh, I get it, there are little white text button "monsters" in the main menu. It is hard to memorize all the monsters and their weaknesses to elements. Game has lack of monster elemental special indicating during gameplay. Like, icons for weakness and attack type above the enemy or "effective", "not effective" like in pokemon game, so player can learn this during gameplay. And understand different weapon reason also.