Purpose: choose the look before fifteen compositions get made. Your A02: the lich arched back (his own pose from the ending, your Kaen reference) with his mask leaving his face, on a flat field of the game's amber. Staged in the game itself with his real model and mask, then finished three ways, each cut to the main capsule (the store front's big carousel) and the vertical capsule. Not settled here: composition (it is centred, with no room yet for the title: round 96), the field's colour, the titles.
What to say: which family (game render, painted, engraved, or a mix by slot), and within it which one (codes). Parts of several are fine ("P3's light with P1's flat field").
Honest, and what you said: up close the game "doesn't look that good". The lich is a smooth, low-detail model.
R1 The game itself, at its own 640x360, pixels scaled up: the staging rendered by the game at its native resolution, every pixel scaled up whole (2x for the main capsule; about 3x for the vertical, which needed a few more rows than a whole 3x holds)
Real bone, real paint. P3/P4 took the It Follows cover as their style reference.
P1 Oil, plain (Nano Banana Pro): the 4x render below repainted as an oil painting, the mask then corrected to his blank shell in a second pass
P2 Oil, plain (Nano Banana 2.1): the same prompt on the other model
P3 Oil, after the It Follows cover (Pro): the render plus the It Follows egg cover as the style reference; it took the cover's darkness too, so the field is no longer flat
P4 Oil, after the It Follows cover (2.1): the same, the other model
P5 The mirrored framing, after the It Follows cover (Pro): the other camera: his arm flung left, head and mask to the right (as Kaen faces)
The old-book side, matching the font: ink lines on a coloured paper, like the anatomy plates on the board.
E1 Engraving, ink on amber paper (Pro): the render redrawn as a copperplate engraving in the manner of Vesalius' plates (S11, S17), printed on amber
E2 Engraving, ink on amber paper (2.1): the same prompt on the other model (its mask came out blank already)