After a long battle on the main ship, Abdel and his robotic companion ATARIUM have finally defeated their foe, they have freed the people of Earth. But in an effort to rid his enemies, the xenos leader had activated a portal across several dimensions, sucking in Abdel, ATARIUM, and their 450 ft. mech. However, the xenos leader was also pulled into the portal, taking them to a world Abdel is unfamiliar to, but well known to the alien. Now stuck in an alternate universe, Abdel must find a way back, and in doing so, he comes across a race familiar to animals back home, yet also... different
Chapters (2)
The story would be decent if it was longer by 2000 words per chapter, and more detailed. However story concept idea Is perfect.
Regardless of how good your ideas are and your creativity is, there are problems with this. One some inconsistent formatting. In a most of the paragraphs of the first chapter, you tabbed the paragraphs, but in the second, you don't. This is very visually unappealing. There's also some major grammatical errors and faux pas. "princess's" should be "princesses," for example. As another, "upmost" is yes, in the dictionary, but it's preferable to use the more common and accepted "utmost."
Try reading some well-known fanfiction similar to your idea and setting (such as Fallout: Equestria or Stasis), as well as establishing a set of rules to follow for your aesthetics. An editor/proofreader can resolve your grammatical issues easily, but it's probably more important to learn to make it presentable by yourself.
Also, finally, as the previous commenter said, you should have longer chapters. Your first two chapters could easily be combined in to one with a horizontal rule separating them as sections.