Since this was a fan-made project, the same two or three people often voiced every character. Tommy Vercetti sounded suspiciously similar to Ken Rosenberg, who sounded suspiciously similar to the random pedestrians on the street. The result was a cacophony of familiar voices arguing with themselves.
you heard a pedestrian in Vice City shout something in Sinhala?
Sinhala speakers frequently mix English nouns (e.g., “mission,” “gun,” “car”). Preserving some English terms in Sinhala sentences (“අපිට මේ mission එක fail උනා”) feels natural but may break immersion for purists.