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

Execution · Practiced Mastery
Managing scarce ammo and resources while executing shots against scripted horrors.

Execution · Practiced Mastery
Landmark scripted FPS following Gordon Freeman through the Black Mesa disaster.
Cronos: The New Dawn leans Execution (Practiced Mastery); Half-Life leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Cronos: The New Dawn
Aimed shots and merge-prevention under pressure demand competent hands
Half-Life
Combat aim and infamous platforming sections
Cronos: The New Dawn leans a little harder on reads, though the gap is small.
Cronos: The New Dawn
Creatures follow designed behaviours, not adaptive minds
Half-Life
Marines flank by script, not by modelling you
Cronos: The New Dawn leans a little harder on variance, though the gap is small.
Cronos: The New Dawn
Unknown layouts and threats matter only on first playthrough
Half-Life
Set pieces surprise only on first run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Cronos: The New Dawn
Ammo economy and resource routing define survival horror
Half-Life
Resource routing and encounter knowledge for speedruns
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.