Throughout my short intervals of messing around with this game, I have seen several very interesting behaviors, bugs, and oversights within. My intentions here are to share as many of these interesting phenomenon as I can think of (that are worth sharing). I will be rating each of them on a confidence percentage (how confident I am that they are possible), a significance level from 1 to 10 (combination of potential impact and significance to the average player or a TAS), and a ridiculousness level (just how insane the idea is). Keep in mind that some of the mentioned ideas are merely speculative and will require further research into if they may work.

Arbitrary Code Execution (Confidence: 90%, Significance: 9, Ridiculousness: 8.5):

If you play the game a lot, you may notice that it sometimes generates a message box reading: "Memory Access Violation". For those who do not know, this message is usually generated when the game tries to access a region of its memory that cannot be read/written or does not have the read/write flag set. Now, there comes some heavy significance to this for one major reason: the game stores its executable code in a readable, writable, and executable region of memory, which is not usually done partly BECAUSE of things like arbitrary code execution and security exploits. If a reliable method of generating an access violation due to attempting to write to foreign memory can be found, as well as a way to reproduce such error consistently, then understanding how the error works may make it possible to generate code and run a jump instruction directly to said code. If arbitrary code execution is possible, then that would mean nothing is off the table in terms of possibilities: teleporting to endings, spawning in items and entities, even running console commands without using the console. The only issue with this is that I'm 99% certain that if ACE is discovered, then it's unfortunately going to be TAS only (because ACE in games is usually hard as hell).

Extreme FPS Bug (Confidence: 100%, Significance: 9, Ridiculousness: 10):

Because the game has a lower limit on its FPS Factor variable (which for anybody who has developed any kind of game, it basically functions like the game's DeltaTime variable), anybody running the game on an extremely high refresh rate might notice something very odd; their game will run faster. And no, I don't mean run faster as in like FPS faster, I mean everything will literally go faster. This happens because the game on each frame multiplies any object velocities (or really anything affected by its own speed) by how many frames have elapsed, adding said value to their respective object position. However, when the game's running on more than 350 FPS then the value will be capped at a minimum, meaning that each frame of the game will increase positions without adjusting for the higher refresh rates, thus making the game run faster. A general formula for the speed of the game may be computed as fps/350 when the framerate is 350 or more. This can allow EXTREMELY QUICK TIMES to be achieved... but since SCP Containment Breach has spaghetti code you would probably need to steal a NASA computer to actually see effective results of this oversight. (NOTE: I may make a TAS demonstrating this oversight in the future.)

Gate Warping (Confidence: 100%, Significance: 9, Ridiculousness: 5):

I have already made a TAS for this, but this glitch basically works by traveling to a specific area of the game that when saved and reloaded in will cause the game to transport you to a certain place. This can be done in basically any externally prepared region of the game: Pocket Dimension, Gate A, Gate B, SCP-860 Forest, etc. For the case of teleporting to Gate B, this can be done by travelling over to the Gate B exit area in the entrance zone, using SLHA to reach a certain height, walking to a certain spot above the room, and finally saving and reloading. The ease of this glitch usually depends on how many times you need to SLHA.

There are more, but I just decided to point out a list of the top 3 that I found most interesting. Also note that these glitches and bugs are either very unfair or nearly impossible to achieve.

gate warping works because game loads the "surface mode" when a certain height is reached,i dont know if you tried it but you can sometimes easily trigger the surface mode just by noclipping through the ceiling of gate b in facility(i dont have the most information about this but this is just something i realized)

Also there is a rule for that fps thing,you must set the fps limit to 120 and forced to show it

Yeah, I'm aware of the 120 fps rule, but the potential that it has when making a TAS is extremely great, because as far as I know, that's sort of pseudo-fair game for a more absolute and general TAS, as long as you're not straight up cheating. To be fair, I probably should have more heavily suggested that my significance ratings on these bugs is likely biased towards TASing. Also, I have accidentally warped out of bounds at Gate B and magically ended up at the exit area, but what I find interesting is that it actually works for a multitude of areas. For example, when I was playing with my friend in multiplayer I was just sitting in the void near some pocket dimension structures. My friend asked me to teleport him to me, but when I did he magically spawned into the actual pocket dimension, and the bozo died after 106 spawned in to rapture him.

Gate warping is already used in the WW category. The FPS limit was introduced when someone was using an incredibly high end computer in the pocket dimension and moving at light speed. Definitely fine for TAS's but not fair for someone with a NASA computer to just have every WR pretty much by default

I was only aware of Gate Warping being used in conjunction with the scp-1499 dimension in version 1.3.3. If that isn't what you are referring to, then I would really like to see a video. I've always assumed that the Gate Warping trick, ESPECIALLY FOR GATE A, was very difficult to humanly accomplish. Also, I really want to see footage of the guy running through the pocket dimensions using his high end computer; that just seems hilarious.

zoooom:

Yeah, I was referring to 1499 warping :P

NEVER in my days have I ever seen a game run at 700+ FPS! Where in the galaxy did this guy get his computer from?! What extraterrestrial beings did he raid?! The most my computer is able to run at is 60! I'm diffidently making a TAS for this. Thank you for finding the video!