We have finally finished creating this mod, and are currently underway uploading! However, Moddbs' upload is currently not playing ball so it may take a while.
In the meantime, we have uploaded the files to Google Drive. EDIT: The mod seems to be uploading correctly now, so no need to use the Google Drive link!
Instructions:
Open the downloaded .zip file and put the content (folder named Hypomania) inside your steam/steamapps/sourcemods/ folder. Restart Steam.
The game requires that Hl2, Hl2Ep1 and HL2Ep2 is installed, as well as SourceSDK 2007!
My game is missing files?!
If the game is missing files, please make sure that you have run all of the above at least once.
If the game is still missing files, it is probably because of Steampipe. You will have to manually extract the content from the .VPK files.
This tutorial details how to fix the error. You want to scroll to the bottom of the post, under the headline "FIX FOR MISSING TEXTURES AND MODELS".
EDIT:
It seems like the files that are missing are only the files from episode 1! So you only need to extract the vpk file from episode one. If the extraction fails, try using a tool like Nem's GCF scape and extracting the "root" folder to where ever and then copying the models, sounds, textures and particles folder to your hypomania folder and merge them. Do not replace anything though!
Send bugs to hypomaniagame@gmail.com, though please be civil about it.