Verified answer
Does Control Resonant have Brazilian Portuguese voice acting?
Quick answer
Yes. Steam marks Portuguese from Brazil for interface, full audio, and subtitles.
What this means
The listing is specifically Brazilian Portuguese and should not be generalized into a separate European Portuguese localization that Steam does not list.
Official source
Steam — Brazilian Portuguese support
Continue with the relevant guide
Open the related Control Resonant guide for the current topic summary, connected systems, and any later verified changes.
This answer is reviewed against pre-release official information. It states unknown boundaries explicitly and will be revised when Remedy or a first-party store publishes a newer fact.