Portal Of Doom:Undead Rising

Find out what happened on the Space Station. Did the experiment gone wrong ?
Search for clues and get to the truth.
Fight your way out of the space station labyrinth and shoot all the monsters.
You will need to find the hidden keys in order to unlock the doors and escape.
Search for the PDA devices and read about the experiment.
Five different weapons.
Alien creatures.
Portals to another dimension.
Alien Isolation with firearms!