激げきムズ

na-adjective, noun

extremely difficult; super hard

Slangy intensifier for difficulty; common in casual conversation and online contexts.

• このゲーム、激げきムズすぎてクリアできない。

  This game is so extremely difficult I can't beat it.

• あの試し験けんは激げきムズだったらしいよ。

  I heard that exam was super hard.