Building comparison
head to head
ALTF4vsHalf-Life 2
ALTF4 asks more than Half-Life 2, and the gap is execution.
ALTF4
Execution · Pure Mechanics
A permadeath precision runner about clearing trap-filled levels in one go.
Half-Life 2
Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.
ALTF4 leans Execution (Pure Mechanics); Half-Life 2 leans Execution (Pure Mechanics).
ALTF4Half-Life 2
Axis by axis
Execution8 vs 6
ALTF4 leans clearly harder on execution.
ALTF4
Permadeath precision movement through traps is the entire test
Half-Life 2
Gravity gun and shooting demand precision.
Reads0 vs 1
Half-Life 2 leans a little harder on reads, though the gap is small.
ALTF4
Solo runner, no opponent
Half-Life 2
Combine AI scripted, non-adaptive.
Variance2 vs 1
ALTF4 leans a little harder on variance, though the gap is small.
ALTF4
Traps fixed once learned
Half-Life 2
Almost no randomness.
Optimization4 vs 3
ALTF4 leans a little harder on optimization, though the gap is small.
ALTF4
Memorising trap layouts and clean lines through them
Half-Life 2
Linear progression with no builds.
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.