Boss - Armstrong | The Main Campaign - walkthrough MGR: Revengeance Guide

Armstrong, just like the rest of the bosses, is no different from the version that Raiden fought.

And its none other than Armstrong. Just like the previous bosses, his attacks are no different (he received a new, "golden", attack now, where the spire of fire that he launches, follows you automatically). However, his health does not regenerate anymore, and instead of rocks, he now throws helicopters at you, which are way easier to destroy. In case of any problems, see the chapter devoted to the game's bosses.

There are no numerous QTE sequences here, which you had while fighting this boss as Raiden. Therefore, you need to find a way to deal with this one basing on your attacks only. Once Armstrong's health drops to 0.1%, the final QTE sequence will start.