HOTD4 ties with HOTD2 as my favourite because I like it for different reasons.
I see HOTD4 as the "skill ceiling" one, where it's incredibly easy to beat and zombies are less aggressive to compensate for the numbers of them on-screen, but the game evaluates your accuracy so much harsher than usual to compensate for the SMG firing rate.
Combined with the art direction that feels like a throwback to stone-cold "cool" action blockbusters of the time and I kinda love it.
I see HOTD4 as the "skill ceiling" one, where it's incredibly easy to beat and zombies are less aggressive to compensate for the numbers of them on-screen, but the game evaluates your accuracy so much harsher than usual to compensate for the SMG firing rate.
Combined with the art direction that feels like a throwback to stone-cold "cool" action blockbusters of the time and I kinda love it.