I'm going to use these numbers to figure out the ideal speedrun composition for groups, since the Hunting Horn really shines when it is buffing others. Do note that these calculations do not include knock-on effects, such as increases or decreases in KO damage and how that alters DPS. These are only projections based on the given numbers. I'll start by using the speedruns above to figure out the ideal DPS for each weapon
| Weapon | Seconds/Mizu Kill (Ideal) | DPS (Mizus/Second) |
|---|---|---|
| LS | 293, From Speedrun | 0.003413 |
| HH (with own +20%) | 331, From Speedrun | 0.003021 |
| LS (with HH +20%) | 0.004096(=1.2*0.003413) |
If the Mizu's hitpoints scale for multiplayer as they had done in World for the Anjanath from "Fungal Flexin' in the Ancient Forest", which was early-game, then a 2-player Mizu will have 1.33x as many hitpoints and a 3/4-player Mizu will have 2x as many hitpoints, and we get the below:
| Group | Seconds/Mizu Kill (Ideal) | DPS (Mizus/Second) |
|---|---|---|
| 4xLS | 146.5(=2/0.013652) | 0.013652(=4*0.003413) |
| 3xLS | 195.3(=2/0.010239) | 0.010239(=3*0.003413) |
| 2xLS | 194.8(=1.33/0.006826) | 0.006826(=2*0.003413) |
| 3xLS+1xHH | 130.6(=2/0.015309) | 0.015309(=3*0.004096+0.003021) |
| 2xLS+1xHH | 178.4(=2/0.011213) | 0.011213(=2*0.004096+0.003021) |
| 1xLS+1xHH | 186.9(=1.33/0.007117) | 0.007117(=0.004096+0.003021) |
tl;dr: If you are solo-speedrunning it is always ideal to bring a Longsword (duh). If you are group-speedrunning it is always ideal to bring exactly one Hunting Horn.