The rabbit walking stick was not a goof. Rather it was a clue to the audience that probably the whole rabbit story was a lie. Akash and Doc might really had killed Tabu and took her eye as the final scene with Akash suggests. The tucking up of the beer can.
At the end, when Ayushman is narrating the entire story to Radhika, he also perfectly describes the "Rabbit" and the actual "Car accident", when in fact he was truly blind at that time.
When the cat steps on the Casio piano keys, the sound of the chords do not match the keys pressed.
After Akash saves himself from getting murdered by Manohar Jawanda, he escapes from his house located on Prabhat Road and the next immediate shot is shown of him reaching the main road. However, the main road is Budhwar Peth, which is nowhere near Prabhat Road.
When Akash is attacked by DSP Manohar after he has turned blind, Akash couldn't have known who attacked him because of his blindness- he just assumes it was Manohar.
When Simi is speaking to Inspector Mahendra about Akash in the hotel room, we can see a boom mic reflected in the mirror just below the hanging photo of Pramod Sinha.
When Sofie meets Akash for the first time and gives him a ride in the evening, she hands over the helmet to Akash without saying anything or touching him, yet Akash takes it instinctively. If Sofie had paid attention, she would already have found out that Akash was lying to her.
At 1h59min, with Portuguese subtitles, it is suggested by the doctor that the blood test was just to scare her.
When Sub Inspector Paresh says that he will call the neighbor Mrs D'Sa for questioning to the police station, DSP Manohar says, "She's a senior citizen, we will go to her instead," - Sub-Inspector should have realized that DSP Manohar couldn't have known the neighbor's age because he didn't mention it.