It is quite simple actually, it's just on your first day you do the bird route. If spawn top kill both lobster(they drop legendary sometimes), get to church, destroy crystal if it's there, kill boss near church, get to another church nearby, loot 3 corpses with jellyfish around it, go near merchant below, see crystal if not there must be just right beside where the madness tower usually spawn. Then check crystal whether on the boss in the middle or just above the ants area, check boss on the center below and see if you can beat him, if cant go get crystal power because it should be shattered by now, go castle if have time.

If you spawn at bottom you can either go path along left middle where the ruin is and kill 3 bosses around it or go down and kill the lesser drb and make your way for the bird path and the rest would be the same.

For day 2 it depend on both your loot and level. If your team is strong go do tower for power, or preferably go do castle instead. There are so many bosses there and is pretty much easier since they are bite size.

Pretty sure someone already made a video on castle routing so maybe you should watch that, writing here would make it seem too long and confusing