Sorry but you guys claiming you are getting one shot from up front with a melee weapon are experiencing one of two possible things:
- Due to lag the person actually got behind you and hit the melee sweet spot even though they looked like they were in front.
- You already had enough damage to get one shot from the front or you were being shot at from another enemy as you were about to get melee and didn’t notice.
There are no melee weapons that one shot from the front.