In a not so ordinary place a entity suddonly appears.
The entity knows not what who/what/where he is, the only thing he knows is that that big blue thing is important.

A moment later portals open up and creatures come out, they charge him, leaving him no other option than to fight to protect himself and the precious blue structure.

PS:
Controls are WASD to move and arrow keys to shoot!
Hide behind the trees for cover the mobs cannot see you there!

PPS:
Keep strong, and stay alive!