The Criticism Shot was used for the first time during Tsuna's fight against Mukuro Rokudo. This bullet came from Leon's cocoon stage after he lost his tail, emerging the same time that the X-Gloves did. The effect of this Bullet is for the target to experience real-time rebukes from people that they know. This allows the internal limiters to be lifted and causes the target to enter Hyper Dying Will Mode. The result of the Hyper Dying Will Mode is to increase the battle sense of the user, and, in a Vongola Boss's case, greatly increases the Vongola Hyper Intuition. This allows them to sense illusions and to understand people (both mentally and physically).
- When Tsuna used it for the first time, his body ached for two weeks because he was not accustomed to the pressure it put on his body.
- Ingesting two Dying Will Pills will have the same effect as the Rebuke Bullet.