Infra Arcana - HP Lovecraft flavor roguelike made by one dude that's really good actually. No xp for killing, only discovery. Survive like the chick in Suspiria and kill the source of the evil
Not a lot of roguelikes with an actual sound mechanic. It's really rough and lacks rooms or "vaults" as DCSS community calls them but I think it could be a great game if he keeps plinking away