Not a terrible VN hybrid, I honestly admire what it aspires to do with its different mechanics but they simply don't culminate in an interesting game.
The structure of Death Mark is composed of chapters with large areas to navigate and pick for key items, similar to Ace Attorney. This is where Death Mark particularly excels, being where it executes its style of horror quite well, with an excellent soundtrack and subtle corner-of-the-eye flourishes that unnerve better than any dough-brained jumpscare does. In between these sections are frankly terrible "puzzles" that typically amount to using key items on obvious spots, and bits where you have to choose the options in a dialogue tree that won't lead to instant death. The writing is basic and repetitious as fuck so the VN parts drag, characters literally never talk to one another, or even say anything particularly unique or interesting when taken on missions. Dotted throughout are these insane CGs of dying half-naked girls that look like they're from a completely different game entirely???

Death Mark wastes too much of your time. I'm not sure why it feels the need to completely deflate its atmosphere by forcing the player to meet very narrow item/character requirements that funnel you into asinine deaths and restarts, only for chapters to end in a hilarious turn-based combat puzzle thing. Curious enough to see if the sequel improves on these things, but I'm not hopeful!