Hi just somehow managed to add a link inside the ports section to open quake. This tutorial helped a lot installing darkplaces.
To install darkplaces, quake an connect it to Emulstation i did the following:
First Update your pi and reboot
sudo rpi-update
sudo reboot
Create a darkplace folder in retropie emulator section could be you need sudo
$ mkdir /opt/retropie/emulators/darkplaces
Get darkplaces install data from here. unzip the dprpi_v1.1.zip file into the darkplaces folder then install darkplaces by running the deb file.
sudo dpkg -i darkplaces-rpi.deb
Now Get quake106.zip and unzip into darkplaces Folder afterwards you need to install lhasa and load the quake ressources by
sudo apt-get install lhasa
sudo lhasa e resource.1
Now you should be able to run quake via commandline to connect it to ports change to roms/ports folder and add a new file quake.sh with this content:
#!/bin/bash
sudo darkplaces-sdl -quake -basedir /opt/retropie/emulators/darkplaces/
Now you just need to make the sh file executable
sudo chmod +x /home/pi/RetroPie/roms/ports/quake.sh
and it should work.