22 achievements worth 390 points. Built from research. Waiting for a player to confirm it works.
Vault reads your save files (valve\SAVE) and never touches the game. Half-Life saves when you change levels and when you save, so chapters pop up as you go.
Any map named in any of your saves counts, so old saves count too.
Vault Launcher is a free community project. It is not affiliated with, endorsed by or sponsored by Valve, Steam, Epic Games, GOG, Electronic Arts, Ubisoft, Blizzard, Microsoft, RetroAchievements or any game publisher. Game names are the property of their owners. Vault Sets are fan-made achievement lists. The launcher never downloads, shares or modifies game files.