head to head
ULTRAKILL asks more than DOOM (2016), and the gap is execution.

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

Execution · Pure Mechanics
A movement-shooter demanding near-perfect execution chains to maximise style rank against scripted but relentless enemies.
DOOM (2016) leans Execution (Pure Mechanics); ULTRAKILL leans Execution (Pure Mechanics).
ULTRAKILL leans clearly harder on execution.
DOOM (2016)
Aim, movement, glory-kill timing all peak.
ULTRAKILL
Style-ranked combat demands flawless movement, parries, and weapon-swap chains
DOOM (2016) leans a little harder on reads, though the gap is small.
DOOM (2016)
Demons scripted attack patterns.
ULTRAKILL
All enemies are scripted; no adaptive human opponent exists
ULTRAKILL leans a little harder on variance, though the gap is small.
DOOM (2016)
Minimal encounter randomness.
ULTRAKILL
Enemy placement is fixed and fully readable after one pass
ULTRAKILL leans a little harder on optimization, though the gap is small.
DOOM (2016)
Rune and weapon mod picks meaningful.
ULTRAKILL
Weapon synergies and ranked-route planning form a deep solvable system
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.