I myself am 100ish hours into AC Odyssey on the Steam Deck, looking forward to getting stabby on some malakas!
Have you played any of the other Metroidvanias out there (Hollow Knight, Ori, Axiom Verge, etc.)?
Not yet. But I’ve bought the humble bundle, so I have Hollow Knight and other to try
I enjoyed Haiku on the bundle, and I’m looking forward to checking out both Bloodstained and Rain World at some point.