進まなければならない

must proceed

→ 進む
phrase Rare #40,142
must proceed Expresses obligation: “must” or “have to” proceed, move forward, or advance. Literally, it means “if [someone] does not proceed, it will not do.”
JA: 私たちは計画どおりに進まなければならない。
EN: We must proceed according to the plan.

我々は暗闇の中で注意深く手探りで進まなければならない

We must proceed cautiously, feeling our way through the darkness.

その洞窟手探りで進まなければならないほど暗かった

The cave was so dark that we had to feel our way through.

彼は殺せる進まなければならない

He can kill the king, but he must keep moving forward.

— HERO (2002)