Ninja Gaiden Sigma 2

All of the "1000 kills with X weapon" trophies can be ground out in story mode, chapter challenge and team missions equally. However, I wouldn’t aim for these at all until you are done with everything else, as it is very, very likely that you will obtain them all by the natural progress of the Platinum.

If you decide to grind or these are your last trophies, you can earn kills quickly in the beginning of Chapter 7. There's a ton of ghost fish in this area, you can simply kill them all then quit the chapter, rinse and repeat. You don't have to reach saves for kills to count.

Notes:

• Performing kills with Izuna Drops and Guillotine Throws do not count towards these trophies.
• Ultimate Techniques performed with Enma's Fang do not count towards its kills.