9. Abzu
Although the first fight with Abzu can be enjoyable, the second fight is even better. Abzu is one of the only bosses you fight more than once and it’s because he has some fascinating mechanics.
Since you encounter him in the sewers, Abzu uses his surroundings and abilities to his advantage since he can manipulate water, which is rather handy considering where you do battle.
Abzu uses things like puddles and sewer drains to make you think about your place on the battlefield. This is interesting because some of the other bosses on this list make you use the environment to defend yourself.
Abzu instead uses the environment against you, meaning you have to be precise as to where you’re standing/blocking. It’s a shame more bosses didn’t use this mechanic.