DW7: Xtreme Legends and DW8 are both serious grinds. For DW8, you need to do 9 battles (very short, 1-2 minute battles) for 77 characters to max their bonds with a female character, then you need to do it again for a male character. Of course, there's also the weapons, which are random drops and you can only carry so many. You need to defeat the playable officers and hope you get one of their two drop-only weapons.
For DW7: Xtreme Legends, you need to do almost the same thing as above, but it can take anywhere from 7 battles to even 30-40 (or more) for something like 65 characters. The other annoying trophy is getting all Titles for all characters, with the most difficult one being a 10 star (max) battle on Nightmare difficulty, although you don't know what to do until you get the Title before it. There's 8 Titles per character, but the most difficult ones are really only the last two.
