It kinda bugged me that the shotgun in Alien: Isolation is completely useless against the Xenomorph (I understand that this was most likely done for balance purposes, but still). So I made this simple mod to improve the shotgun. Now it's able to damage the Xenomorph and force it to retreat like the flamethrower does. Bear in mind, it's not so easy as it seems. You'll need to have a two clear shots at the Xenomorph from close distance and it is very hard to do when the creature charges at you.

The shotgun can now damage the Alien and forces it to retreat like the flamethrower does.

You'll need to take around two clear shots to the Alien from close distance.