"The force was such that the victim stumbled down the stairs, off the deck and on her knees on the grass."
Hill left the house and was located by police at his home address a short time later, stating to them that he had not hit anybody.
The victim said the assault made the left side of her head and face sore, but she did not require any treatment.
Hill appeared in Whanganui District Court on Tuesday for sentencing after pleading guilty to male assaults female and driving with breath alcohol over 400mcgs, for which he was convicted.
Lawyer Roger Crowley said Hill was remorseful.
"This arose as the result of a shift of houses, these people were friends of his. Apparently they partook of some type of homebrew," Crowley said.
"He drunk too much of it and acted in the way that he did. He's a traveller for a food and beverage company. He has been suspended from work as a result of this offending."
At 4.40am the day after the assault, Hill was pulled over and breath-tested returning a result of 729mcgs, the second time he had driven with excess breath alcohol.
Judge Dugald Matheson ordered Hill to pay a $1000 fine, $130 court costs and disqualified him from driving for six months.
Judge Matheson then ordered Hill to pay a further $750 in emotional harm reparation to the victim of the assault.