A woman in armor holding a sword in a dark room

"Create a dynamic poster of a courageous treasure hunter in a fantasy setting. Sketch her confident pose with a raised sword, emphasize character details like short hair and determined expression, draw a substantial, battle-worn sword, craft a captivating fantasy treasure trove background with lurking beasts, apply effective lighting and shading, add fine details including battle scars and ornate armor, optionally use a complementary color palette, refine the composition, and add final touches to bring the scene to life for a visually compelling poster."