I think the reason of the low play rate mostly is that people play it, join a room, take lots of time to join and then just quit and never play. So the lagging servers is the main problem
draken, i had the same issue, but then i gone to one crystal and it wasn't glowing, i activated it three times and the door opened, and thunder there are three crystal podiums, press N to find the last one
woot good game even the hard ending is palyable :D (o and btw if you can't beat the gaurdian, die 3 times then the game gives you a hint of how to kill him), and lord salis the fourth gem is found in the skim the sky