expression
no matter what; by any means; at all costs
Strong determination to achieve something regardless of difficulty or obstacles. Often used with verbs of effort or intention.
See also: 何としても
何としてでもこの試合に勝ちたい。
I want to win this match no matter what.
彼は何としてでも約束を守ろうとした。
He tried to keep his promise at all costs.