I haven't been able to figure out if there's a way for me to get the latest version of MonoDevelop in Hardy. Would someone be able to help?
Yes you can. But you need updated Mono also. Then, you can compile it (if it doesn't depend on something else besides mono.).
(NOTE! I wrote the "usual way". There is no guarantee that this will work. Make sure you READ the README/INSTALL file in the source folder of Monodevelop. Also, keep the source folder (what you used for install). You will be able to delete it later using this folder and issuing the command: