Doing the Shugo Tomb with only 2 players is more challenging + you have a higher chance to get a better medal -> better loot. And also more EXP for players who are not yet 65.
This is not a perfect run, but it worked well enough, so here you go:
https://www.youtube.com/watch?v=TGhGV5h0MLw
Hope this helps some of you. Footage is from official server from 4 years ago, not from Euroaion!!
Have fun!