Okay so first off, judging by the sample screenshots provided I'm not sure what's supposed to be a spoiler or not, so I'm just going to give a general recommendation to passers by to read this, as they should for all the jam submissions, but also maybe to go in blind since piecing together how we get from the intro to present events in the first half was kinda fun. Spoilers from here on out though, so avoid 'em if you don't want 'em.
Presentation here is generally fine - assets are clearly limited from the jam constraints, but the sprites you have are used effectively and the music does the job. Definitely not overbearing or annoying at least. Obviously none of that applies once the "visual" part of the VN goes out the window at the end, but you're already aware of that. Jam deadlines happen and this one isn't being scored so I'm not going to fault you for anything. I'm glad you included the rest of the story even if the visuals weren't complete.
Moving on to the "novel" part of the project, the writing here is... a bit hit or miss for me. The action scenes are where you really shine - it really seems like you have a keen interest in these parts and I think you put a lot of effort into "choreographing" those scenes in a clear and well-paced way. I can also tell you put a lot of effort into the lore surrounding the wraiths, and while this much attention to detail is appreciated, it was also a lot to absorb for a story this relatively short. Going forward with other projects, it may be worth taking some time during drafting and revising to make sure you're focusing on the parts of the lore that are most relevant to the reader.
As for everything between the action scenes and lore explanations, there's really not much there. It's mostly just Myles traveling from location to location, beating a monster, then more internal monologuing, the general tone of which is morose and melancholy in a way that feels like it's going for "Nordic noir" but occasionally veers a bit towards "edgy anime". I think in order for this story to be stronger we need two things:
1) Myles needs an arc. I think there's an attempt at this with him saying he's happy to be alive at the end, but that doesn't really feel earned. If you zoom out, really all that's prompting him to say that is making small talk with another guy that cooked for him twice, both after he did variations of his ghost-stabbing job for him. There need to be more moments in the story to positively change Myles' perspective to reach that resolution, whether that be more interactions with Billy, or Thomas the nice operator guy, or something.
2) More information about Mike. For a story that puts so much emphasis on memory and losing connections with your "humanity" (scare quotes because furries) there is practically nothing here about what Myles/Mike was like before he died. All we get is him having friends, immediately dying, waking up in a morgue, and getting his briefing from I Can't Believe It's Not SCP. So when Myles says Mike definitely wouldn't have approved of what he did to Grand, yeah we can take that at face value to some extent but we really don't have anything concrete to contrast Myles' current actions and personality against.
There are a few more minor things here and there, like some weird grammar issues like "the" missing where it should have been there in many lines (not sure if this may have been translated from a language that doesn't use definite articles?), but I think I've yapped for long enough ^^".
I give this one 15 Nazgul out of 7 Covenant Wraith main battle tanks.