I have only been able to perform this glitch before I got a gun. Sometimes when doing certain things while pulling out or holding out the compass, it will glitch so you are unable to put it away, and your arms will stay where they are while the compass still follows the screen when you look a different direction. Also, your right arm will be stuck below you.

If you hold a notebook and right click to zoom in on the notebook, then (while still zoomed in) change weapons, your screen will stay zoomed in. Pulling out your notebook will make your screen normal, until you switch weapons again. Eventually you may be able to find a way to make your screen normal again.

At a certain point in the game, you will come across a MG-34. If you switch weapons after you pick up the MG-34, you drop it and will need to pick it up again if you want to use it. To get around this, pull out any weapon and run towards the MG-34, pressing 'E' to pick it up while still running. This will allow you to keep it stored as a 3rd weapon which you can switch to when you feel like, rather then having to repeatedly drop it whenever you want to check your compass or conserve ammo. If you switch to the MG-34 and switch back to something else, you will need to re-perform this glitch.

In survival mode, sometimes monsters will get stuck in certain parts of certain maps.

Thanks, sgriphen!

When you get to the mayan temple, it is possible to get a sharp increase in lag.

Thanks, GloomyFenix!

Some people expiriance difficulty shooting their gun, but going to the menu seems to fix it.

Let me know what glitches you have experienced in the comments and I will probably add them to the guide. Feel free to also submit screenshots/videos to improve the quality of this guide.