Author, if you would like feedback on this draft, please post a proper sandbox link.
That said, this is highly-problematic on the conceptual level, especially with:
SCP-XXXX appears to suffer from severe osteoporosis, but despite this flaw, the anomaly is incredibly agile, able to reach ███ km/h in less than a minute and is roughly six times stronger than the average human. SCP-XXXX is nearly impervious to traditional weaponry (firearms, explosives, harmful chemicals, biological, etc.).
Keep in mind that as the author, you know the entire story, but the Foundation needs to have discovered what it knows about the SCP object through observation and experimentation. You'll need to convince your reader that someone with no prior knowledge whatsoever of the anomaly managed to somehow figure out (not magically know!) all the information you've got in the article.
The more random statistics and "here's different levels of how strong it is" info bits you have in an article, the more skeptical a reader will get, and the less likely people will take something seriously since it just seems like you ripped off a video game boss or something.
Also, humanoids are actually among the most difficult types of articles to write successfully; if you're really set on writing one, then first take a look at the humanoid writing guide if you haven't yet.
I recommend getting the base idea polished up in the Ideas and Brainstorming forum before you try fixing the draft. Go to that forum, post a quick summary of the concept you want to write up (don't link the draft unless someone asks), and reviewers there can help you get the concept to a place where it'd be more likely to survive on the mainsite.