This script also allows user to operate Flycam with arrow keys (in detail, it makes arrow keys to work as WSAD, but only when Flycam is started with F8 button)

.ahk file to compile yourself or run with AutoHotKey software.

May be flagged as a virus by your antivirus software - 99% it's false positive, but if you don't want to take a risk, download the main file.