The Katana is the only tier 4 blade in The Culling. It is an extremely versatile weapon, that allows for many different playstyles. While it does the least damage out of the tier 4 weapons, it compensates for it by having the highest speed out of them as well. On top of that, it was a very high wound intensity, which causes the bleed to deal 14 damage over a 10 second period.
The Katana can be found in late-game airdrops.