No Escape by Prowler

Making-of No Escape, from pencil to composition (and a few vector effects) in Photoshop and pixelling in Grafx2.
It seems Prowler was using Grafx2 v2.1, judging by classic skin and no layer toolbar - two layers would have helped him draw over his sketch and fill his clean outline without having to clean every pixel of the sketch.  He doesn't use the Shading mode as I'd have thought, instead I suppose he uses a lot the keyboard shortcuts for next/previous color :  [ and ] on a QWERTY keyboard.