"In the first innings with the bat, get partnerships together, get a total that we thought was very good on that wicket, and then the bowling was very clinical again," Williamson said.
Veteran batsman Ross Taylor was pleased with the side's tenacity throughout the pool stages and was full of praise for the efforts of Sodhi and Elliott.
"As the tournament's gone on I think we are winning those crucial moments and putting pressure on the opposition," Taylor said.
"The bowlers have got to take a lot of credit for the way this team has gone so far in this tournament.
"We don't want to get too carried away but you've got to enjoy the success of everybody, every bowler is playing its part.
"(There's) Still a long way to go but it's a pretty happy dressing room and (we're) looking forward to the semi-final."
Meanwhile, the White Ferns also booked their place in the semi-finals of the women's tournament, after inflicting a seven-wicket thrashing upon South Africa in Bengaluru.
South Africa started with the bat but New Zealand's bowlers restricted them to 99 with Sophie Devine and Leigh Kasperek claiming three wickets each.
The Ferns reined in the 100 runs needed in 15 overs with openers Suzie Bates and Rachel Priest combining for a 57-run partnership.