Dreamkiller

Just as the title states in the 1st person shooter Dreamkiller, you play Alice Drake a psychologist who has the wicked awesome ability to travel into her patients dreams and destroy in a wicked bloody mess their inner demons.

Utilizing a host of fantastic weapons and her own special abilities, Alice confronts our common demons only to discover an even deeper menace reigns within. The ultimate showdown becomes inevitable between that which would torment and she who will protect, and only one force will prevail amidst a variety of dreamscapes as varied and bizarre as the human mind itself. Dreamkiller features 12 rich levels of single-player gameplay each laced with swarms of hideous and disturbing enemies reflecting the mind’s infinite palette of fear. The onslaught continues with numerous multiplayer modes and a host of over-the-top weapons and supernatural abilities.

 
Source: Dead Pixels Video Game News For The Dreamers