2D game sprites and icons for a browser MMO (hand-painted, top-down, 40 px tiles)

Isle of Morrow is an Ultima-Online-style browser MMO in development. I need an artist for a fixed set of work, in six separately paid parts: a concept sheet and five sprite sheets for the game’s main enemy, five boss monsters (15 frames each, matched to existing sprites), 141 small icons in one treatment (list supplied), five small interface sets, and one 1920×1080 painting. A full brief with sizes, naming and a reference folder is ready. Hand-painted only; layered source files are delivered with every part; no stock assets and no AI-generated images at any step. Please send examples of consistent sprite work (several pieces in one style, animation frames if you have them) and a per-part quote.

NOTE: The full description of what is needed is in the attached ZIP file. DO NOT SEND GENERIC/PLACEHOLDER BIDS. Please read the project description carefully and give your actual price. There are six phases to the project, so I'll break your price into equal amounts to be paid upon completion of each piece. ORIGINAL WORK ONLY - ABSOLUTELY NO AI