Hi Wess! 👋 I’m interested in taking this on. I went through your full requirements and the references you provided, and I can handle the prototype as a complete Unity environment rather than just the individual technical pieces.
I can build the island terrain with a clear beach → cliffs → volcanic area progression, layer the sand/grass/rock/volcanic materials, set up the active volcano with smoke/lava/ash effects, surround the island with water, add the building, and integrate a third-person controller so the entire island is properly explorable.
I’m also comfortable working with ready-made assets and Unity’s built-in tools, which fits the scope you described. The goal would be to keep the scene lightweight while still giving it a cohesive stylized volcanic-island look rather than simply assembling unrelated assets.
Your $90–$140 budget is within the range I’d consider for this prototype. If you're still looking for someone, I can send you relevant 3D/game environment work and we can discuss the exact scope and preferred references before starting.