Games Like Hospital Aliens 2

You are placed in a abandon forest filled with beings that were once human and other creatures called aliens. The Alien boss resides in a house you must find in the forest and you must capture what it is guarding. Will you escape and bring humanity closer to ending the epidemic? Use stealth tactics such as crouching, hiding behind walls and trees, and also a weapon to complete your mission. Their is a indicator in the game that lets you know when you've been spotted.
In this First-Person experience you play as Greg who is a retired soldier who was taken away from his farm to combat aliens and zombies. He is angry and determined to defeat the enemies and return to his former life but be careful, every sound and step you make could make the enemies aware of you!
Will you also find the weapon to make stealth less of a risk for zombies and aliens?