1. How do you play Samurai 5e?

Your fighter is not going to become a Samurai fighter till you hit level 3. But that does not mean that all the choices you make from the get-go are unimportant. If you want a "classic" archetypical Samurai with fury, speed, and a razor-sharp katana, be really to open yourself up to new experiences.

2. What weapon should a Samurai DND use?

The weapons available for use at a Samurai fighter's disposal are as follows: Heavy or hand crossbow, glaive, pike, greataxe, greatsword, maul, handaxe, longsword, war pick, Warhammer, longbow, short bow, quarterstaff, spear, rapier, shortsword, and whip.