What a lot of people are missing is that a better way of making the gameplay challenging, is to make the enemy themselves challenging. Take a look at monster Hunter, which does have mechanics you have to keep in mind, but they all come from the monster you’re fighting. This is one of the reasons why I find tormentors one of the more unique and entertaining enemies introduced in the game. It has weak spots, and when you activate them, it changes their behavior. Destiny needs enemies and bosses who’s combat mechanics are fun to face Relying on a puzzle being the primary obstacle takes away from the combat. But this is why Raids fill with ads that impede solving the puzzle, it gives you something to shoot