The Quake 2 & mods Amiga sources and support files as released by Hyperion. The archives have all been converted from Hyperion's proprietary hpa format to lha.
The archives should be available from Aminet soon.
Thanks to Golem/AmigaNet for doing all the repacking and uploading. He also did a quick attempt to compile Quake 2 from these but wasn't successful.
And of course a big thank-you to Steffen Haeuser (and whoever might have contributed) for all the work he's put into these ports.