1) I ve managed to start lr-blood.sh (I first changed the name to Blood.sh but in the beggining i had permission denied problem so i used the command):

chmod +x /home/pi/RetroPie/roms/ports/Blood.sh

The problem is that i do not have controller any more (the other ports like doom, quake, play normally). A yellow text for XBox controller also appears. Any thoughts?

2) Smithers, i see on your youtube channel (https://www.youtube.com/watch?v=HxjabijmIWM) that you have managed to run OPENBOR in RetroPie (2 games). Are y planning on updating your image with this engine? Some games look great !!