Platform(s): Mac (Apple Macintosh probably?)
Genre: Arena auto-battler
Estimated year of release: 80s-90s
Graphics/art style: Fantasy, leaning on edgy. I don't remember the graphics much.
Notable characters: Ratfiend, Rottrevore (Ratfiend was the second-hardest enemy, Rottrevore was the hardest)
Notable gameplay mechanics: Each character can pray for mutations, up to 6(?) times per character. Some enemies have a move called The Rot, which is instant death on hit.
Other details: There was a guitar riff that played if you killed an enemy with a critical hit and you got bonus gold. I remember two of the weapon names were Faithshaker (the best weapon gold could buy) and Chaos Rune Blade (which was only available from mutations, IIRC)
I played this game for weeks at my cousin's house when I was younger. I don't even want to play it now. I just want closure and confirmation that this game did exist.