Surviving the apocalypse with a friend

In the world the most massive apocalypse has begun, the streets are filled with zombies, and even alien ships have been spotted somewhere!
You and your friend built a base in the woods away from the cities.
But even there began to visit enemies of all stripes: zombies, raiders and even robots!
But you are able to give them a serious fight! Protect your base, protect each other! Fight off all the enemy waves!