I actually have no real problem with the art even if it's because the artist is lazy. Seeing all these dead bodies in low/sketch quality art is pretty hilarious and matches the atmosphere of everyone just being fodder and dying willy nilly.
On the plus side, he should get a bunch of the gems if he makes it to midnight after all the misfortunes we've seen befall him. On the other hand you can really tell he's a Japanese gacha gamer, he used 3 out of 6 remaining gems just to show them the gacha function.