I think these haven't been mentioned before...
You are able to walk ontop of a certain roof tiles on two houses in Lide (building left of the inn and the building just above that one in the top left hand corner). On the first building, its the tile 12 up and 12 to the right from the bottom left hand corner. And on the building above it is the same tile as the bottom one
When you beat your second opponent in the plunge tournament, you will get a new blade art. When informed of it, Cetsa's face set has not been erased
When you go inside the Foreman's manor in Lide just before the confrontation with Kloe, Trazuin, Rhue, Kygar, Cetsa and Scatha... If you go back outside and to the house in the right hand top corner, you will be able to see Scatha's shadow still standing on the roof despite the fact that she's suppose to be inside
If you do well with a suicidal wanderer at the end of the Marna stretch, he'll give you a heart stone however the add variable command is missing so you will get nothing...