His technical brilliance shone through his masterful handling of light, accurate skin tones, and the realistic texture of fabrics. Deeply inspired by surrealism and Salvador Dalí, Bhattacharjee infused his realistic portrayals with an enigmatic, psychological depth that operated on a subconscious level. His canvas served as a mirror to middle-class Bengali society, capturing its deep-seated superstitions, aspirations, and underlying corruption, alongside harsher urban realities like the Naxal movement and the lives of sex workers.

He achieved widespread commercial success through acclaimed collections such as the Doll Series and Durga Series, alongside moving portraits of iconic figures like Satyajit Ray and Indira Gandhi. Celebrated throughout his career, he received the prestigious Lalit Kala Akademi Fellowship in 2003. Although a stroke in 2000 tragically halted his ability to paint, his legacy continues to inspire generations of contemporary Indian realists.