head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Practiced Mastery
Retro co-op hack-and-slash about kiting monster floods through castle floors.

Execution · Practiced Mastery
Robot-dinosaur hunting that rewards weak-point study and ranged precision.
Hammerwatch leans Execution (Practiced Mastery); Horizon Zero Dawn leans Execution (Practiced Mastery).
Hammerwatch leans a little harder on execution, though the gap is small.
Hammerwatch
Kiting hordes and dodging projectiles
Horizon Zero Dawn
Bow aiming and dodge timing matter.
Horizon Zero Dawn leans a little harder on reads, though the gap is small.
Hammerwatch
Enemy spawners follow fixed logic
Horizon Zero Dawn
Machines follow fixed patterns, not adapting.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Hammerwatch
Secrets hidden until the map is learned
Horizon Zero Dawn
Some loot and patrol randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Hammerwatch
Class builds, vendor economy, and secret routes
Horizon Zero Dawn
Weak points, traps, builds fully solvable.
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.