There is no save feature. If you die, you restart from the very beginning, unless you use rare items like "Signs" to create temporary checkpoints.
The ALTF4 PC Game Experience: A Guide to the Ultimate Rage-Runner ALTF4 Download PC Game
The game's title is a direct reference to the Windows keyboard shortcut for closing a program, reflecting its primary goal: making the player want to quit in a fit of rage. There is no save feature
You can officially download on PC via Steam. It is often available for a low price, typically around $2.99 , though it frequently goes on sale for even less. PC System Requirements ALTF4 - Download - TUTORIAL | 2022 you restart from the very beginning