head to head
Neither is simply harder - they are hard in different places. DOOM (2016) demands more optimization; Infinity Runner demands more variance.

Execution · Pure Mechanics
Push-forward arena FPS where movement and aim are the whole game.

Execution · Pure Mechanics
A first-person endless runner testing reflexes on a doomed spaceship.
DOOM (2016) leans Execution (Pure Mechanics); Infinity Runner leans Execution (Pure Mechanics).
DOOM (2016) leans a little harder on execution, though the gap is small.
DOOM (2016)
Aim, movement, glory-kill timing all peak.
Infinity Runner
Fast reflexes for dodging and QTEs define play
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
DOOM (2016)
Demons scripted attack patterns.
Infinity Runner
Scripted obstacles, no adaptive opponent
Infinity Runner leans clearly harder on variance.
DOOM (2016)
Minimal encounter randomness.
Infinity Runner
Some procedural obstacle variation
DOOM (2016) leans clearly harder on optimization.
DOOM (2016)
Rune and weapon mod picks meaningful.
Infinity Runner
Little to solve beyond reaction memorization
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.