These instructions have worked for me.
1. Download
https://cdn.discordapp.com/attachments/367766412506169347/371488634399883264/AA-Mods.zip
2. Move the "ArcheRage NA" folder to your desktop. - Default location is "C:\Program Files (x86)\ArcheRage NA"
3. Extract the "saphmod" and "KRFontMod" folders into the "ArcheRage NA" folder that is now on your Desktop
4. Open the "ArcheRage NA" folder, then go into the "saphmod" folder
5. Click "patch.bat" and wait for it to finish. It will automatically close.
6. Repeat #4 and #5 for the "KRFontMod" folder.
7. Move the "ArcheRage NA" folder on your Desktop back to it's original location
8. Launch the game and log into your character 9. Open and close your option menu to activate the FoV mod