While it supports Mouse and Keyboard, many find the "jank" easier to manage with an Xbox controller , which is natively supported in the Steam release.
Older versions frequently crashed on CPUs with more than four cores. The current version fixes this, allowing the game to run smoothly on modern i7 and Ryzen processors.
Here is a blog post covering the legacy of this version and how it keeps the French Resistance alive for today's players.
Viva La Résistance: The Saboteur’s Final Stand in Version 1.03b
The game’s engine is tied to its frame rate. Users on Reddit suggest keeping your refresh rate at 60Hz (or 59Hz) in the launcher to avoid physics glitches and input issues.