Overall, the event is nice but there's things that's bothering me a bit :

I suppose i'm not the first one to point this but the final map is messy, especially due to the "invisible" AOE. If only they could be visible, even briefly, that could help at least to have a better reaction. But from some point, adding Yojimbo's attack, it's just too much about human's average reaction time. Even if we try to anticipate, in the heat of action, that's complicated.

But the thing that depresses me so much is the achievement. It has the same issue i have with the (PVP Frontline) Rock Seal's capture achievement. It's nice to have this kind of goals but in the end, it'll be divided by the numbers of players participating. And in the end, it make the thing feeling like impossible and it just makes you giving it up the idea of even trying to farm it, especially if we add issues like "RNG" and/or netcode stuff. The ideal would be to reward participation : instead of having 100 wins, maybe having a "proceeds to XXX rounds" would be more appropriate, it would keep the player invested while keeping the event alive and fun, because it'll remove the frustration of grinding. Again, considerate there's 1 person on 24 that'll progress on the achievement.