Because “hit” is not a standard term. You likely have a corrupt file. Seek out a verified from a known Redump or No-Intro DAT. The original WAD should have MD5: f6a4c3b02e0b8f9a1d2c3e4f5a6b7c8d (example – check online databases).
This specific WAD is the gold standard for use with the Dolphin Emulator , allowing you to play the game in 4K resolution with modern controllers. Why You Should Play It Today castlevania the adventure rebirth ntscuwad hit repack