Okay, here we go. Clearing up the backlog, so this is a quick read. Here are my thoughts:
So… the writing style feels kind of jumbled and excessively short and choppy. There are two variations of this, the first noticeable in the containment procedures:
Testing must be approved by Foundation personnel with a Level-4 clearance or higher. SCP-3270 is allowed a list of requests. Two armed guards are to be stationed outside of SCP-3270 containment chamber in 8 hour shifts.
You jump from testing protocol, to request allowance, to guard stationing. The rest of the containment reads like a similar mishmash, which comes off as disorganized and hard to follow. To make it less of a slog for a reader to get through, group similar information together into shorter paragraphs rather than just sort of throwing everything together into two giant walls of text.
The second version of the "choppiness" is in the description:
SCP-3270 is a 18 year old male human of European descent. SCP-3270 is approximately 1.82 meters tall and weighs 95.25 kg. SCP-3270 displays numerous visual anomalies and any attempts to observe SCP-3270 have been known to cause chromatic aberration. SCP-3270's skin suffers from intense purple discoloration.
Each one of these sentences seems to start the same and follow with a very similar sentence structure. This gets boring, and drags on longer than it needs to be. Combine some of these sentences for better flow. Granted, while in-universe these documents are written to be scientific reports, IRL readers are expecting enjoyable flash fiction. Vary your sentence structure so it doesn't get boring.
Overall… I feel like the idea is workable, but the piece is just way too long as-is. Feels more like a tale than an SCP article, especially since the bulk of your content happens outside the main body of the description. I personally feel like a lot of this can be trimmed out, such as the "list of requests since containment" section, which comes off as derivative of other SCP articles that have done the same thing, and basically boils down to "the Foundation grants some stuff but only for a stated reason". I'm also not entirely certain you need the INCIDENT 01A bit, since that just seems to introduce seemingly unrelated drama that takes away from the tone of the rest of the piece. Having the dog just kill a bunch of Foundation staff and then the kid showing up afterwards with broken legs feels like a stretch for me to attempt to enjoy, and I'm not sure that's the note you want the piece to end on when you've got much more compelling emotional material prior to that.