Oh those guys? Yeah those are just the dozens of professional voice actors we could afford to hire with our tiny baby game studio budget! And those guys? Yeah that's just our 7-person "engineering" team. What do you mean your entire studio is 4 people?
suck off me
(for the record I'm not dunking on Hades or Hades 2 as a game this is just something that pisses me (and I assume only me) off)
i think, really, a lot of it is translators and voice actors (its plausibly more than 60 people - voice for each character in each language, plus 1-2 translators), check the credits yourself, i think nine sols, for example, had like 10 devs, the credits still took 10 minutes with kickstarter backers/translators (cause you just see same names in editing/world design/character animations/physics, something i would think would be disentangled in big games)
(additionally even volunteer translation into relatively tiny language, which indies sometimes do, still merits a credit, that's probably for hades like 20 people for euro languages, cause it's so popular)
do be sad they caught sequel-itis