The concept of Xenomorph-like life, as seen in the Alien franchise, involves fictional creatures with unique biological characteristics and traits. While it's entertaining to speculate about exotic forms of life, the scenario you described is highly unlikely based on our current understanding of biology and astrophysics.
Neutron stars are extremely dense objects formed from the remnants of massive stars after a supernova explosion. They have intense gravitational fields and emit powerful radiation, including X-rays and gamma rays. The habitable zone, which refers to the region where liquid water could exist on a planet's surface, typically depends on receiving an appropriate amount of stellar radiation from a main sequence star like our Sun.
Given the extreme conditions around a neutron star, it's improbable for a planet to orbit within its habitable zone. The intense radiation emitted by a neutron star, including X-rays and ultraviolet radiation, would likely pose significant challenges for any form of life as we know it. Biological structures and molecules would be subjected to severe damage, making it unlikely for complex life forms to evolve and thrive.
While some extremophiles on Earth can tolerate high levels of radiation, they have evolved to withstand the conditions found in their specific environments, such as certain types of bacteria in radioactive environments. However, the conditions near a neutron star would likely be far more extreme and hostile, surpassing the limits of life as we currently understand it.
It's important to remember that our knowledge of the universe is continually expanding, and there may be phenomena and possibilities we have yet to discover. However, based on our current understanding, it seems highly improbable for Xenomorph-like life to exist on a planet orbiting within the habitable zone of a neutron star while being immune to X-ray and ultraviolet radiation.