was the end of dead space 3: awakened a halusination

When he arrives home, he talks with his girlfriend, Ada Chavez, an anthropologist working in Chicxulub, and tells her about his day. Altman thinks it's a prank and decides to go home instead. One day, he receives a call from a mysterious man and he tells Altman to meet him at a bar at 8pm that night. So he decides to contact fellow scientists around town about the crater.

Altman decides to find out more about the anomaly, unlike Field who already gave up. For days they try to figure out exactly what caused the anomaly but to no avail. He along with his partner James Field, discover a gravitational anomaly coming from the center of the crater in Chicxulub. The book then shifts to Michael Altman, a geophysicist, who is working in a field laboratory located in Chicxulub. He realized she has been dead for quite some time and he runs out of her house after he starts hearing more whispers. Once there, he walks in and notices blood all over the walls with strange symbols, and finds her dead on her bed with a slit throat that was apparently self-inflicted. He notices she's gone and heads to her house to see if she went back there by herself. Not long after, he walks the bruja home but loses track of her due to him hearing whispers and seeing imaginary things.

She also tells him the meaning of the name to the town Chicxulub - 'devil's tail.' He burns the creature and it dies, leaving behind only its charred skeleton. The bruja sets a log on fire and tells Chava to burn the creature as it was getting bigger. He gets her and brings her back to the beach. His mother tells Chava to get the old bruja (Spanish for 'witch'). He brings some people back including his mother and they all see with horrific shock the creature on the beach. The creature was emitting a toxic gas and was growing bigger so the boy decided to head back to town and tell the inhabitants. The book then shifts to a small town named Chicxulub where a young boy named Chava (nickname for Salvador) who has difficulty getting sleep, walks along the beach to discover a humanoid creature. However, the creature incapacitates him, then picks him up and tears him in half, killing him. He manages to gain the upper hand briefly by diving between its arms as it charges and tearing open the creature's abdomen. The book opens with a man being attacked by a large creature in a circular chamber. 05 February 2013 Plot Part One: Puerto Chicxulub

Was the end of dead space 3: awakened a halusination