Critical points?
It's a go around. No more critical than a take off.
I've done four this winter. One from an ILS at 3500 ft, one from 2000 ft on a non precision, one from ILS minima dual channel and one from ILS minima single channel.
I was not aware I was in a critical situation on any of them. No high thrust, white knuckled, struggeling to control the pitch events.
A go around is a normal procedure. Why do some of you think this is a near disaster?
Any part of the flight can become critical if you don't know what you are doing, or if your brain is working like a bowl of syrup because you are tired.