Portal Of Doom: Undead Rising

It’s not so distant future when the mankind has invented spaceships and even portals leading to different dimensions. One of such portals is being tested at a space station right now. But something goes wrong and you receive an alert over the radio. What could it be? You rush to the signal and find out that the station has been seized by hideous monsters breaking in through the portal. There is only one thing you can do to save Earth from certain death – kill all the enemies, locate the portal and destroy it!