Annapurna’s Level Designer & Artist, Polygrove, released a free DLC-sized Mod for Half-Life: Alyx, called Re-Education. This mod features a medium-length campaign that will last you around 30 minutes to an hour.
According to Polygrove, Re-Education features standard Half-Life Alyx style gameplay with a focus on slower pacing and environmental storytelling. Players will be able to scavenge and explore, but more importantly; try and make it back to the train in one piece.
This is a cool mod that you can download from here. Below you can also find a trailer for it.
Speaking of Half-Life: Alyx, we also suggest taking a look at the following mods. There is a Silent Hills PT Remake Mod, as well as a Bioshock Remake Mod. Modders are also working on a Goldeneye 007 Mod. Furthermore, there is a WIP demo for a Jurassic Park Trespasser Mod. Half-Life: Incursion is a wave-based combat mod. And lastly, Half-Life Alyx: LEVITATION is a DLC-sized mod that aims to offer 5 hours of gameplay.