A site called The Collection Chamber is releasing these pre-packaged installers for emulated games. They have included Alien Trilogy, Alien Resurrection, and Aliens Comic Book Adventure so far.https://collectionchamber.blogspot.com/
These are really nice if you're not that computer savvy. You merely install these and click to run, that's literally it.
For Alien Trilogy, you might have to tune the game up in the DOSBox CONF file a bit, but the amount of time it takes to do that probably depends on how obsessive you are (my cycles are set at 95000 for what it's worth).
Resurrection runs like a dream so far, and works with my Xbox One controller.