Fist

The fist was the default melee weapon in Notoriety beta.

Overview
The fist is the first melee weapon you get and has a surprising amount of damage and knockback for a fist. It may take 2-3 hits to take out a guard. It is also the best weapon out of the roster to take on a stealth heist, as it has no detection at all and yet still has a good amount of damage and knockback.

Stealth Capabilities
The fist, no doubt, is the best melee weapon to take on a stealth run, due to having no detection at all and still having a good amount of damage and knockback.

Attachments

 * None, due to it being a melee weapon

Trivia

 * This weapon would have been able to one-shot any Unit on normal difficulty if it was in the modern-day Notoriety.

Summary
In conclusion, the fist is the best melee weapon to take on a stealth run, and is the default melee weapon they give to you when you start the game. However, consider taking the Drill or the Murderer's Knife if you are going for a loud heist.