2) I've collected the three strange items (the dagger, the amulet, and the big sword) now what am i supposed to do with them?
the holy weapons. or something like that. what u can do is to find the entrance to an underground chamber which is located northeast of the church(which itself is north of the haunted abbey, or it south?). u shouldn't touch any of the tombs in there. & place each of the item in the circles(look at the floor). then u get to choose which item that u want to keep. the chosen item will be rendered useful & powerful but random in stats. u may want to save prior to choosing.
I'm not finding any kind of underground chamber north east of the church or anywhere *near* the church.