The rest of their stuff is pretty damn good. Their latest, The End, features only bass, drums, and vocals as the guitar player left. I really like it. I've read reviews saying they thought the heart of the band left with Mika, but I feel it's still very much Gallhammer. Mika definitely added a certain flare, but I think the heart of the band is still present. Anyway, Gloomy Lights, Ill Innocence, and The End are their only real albums. The rest are basically demos, collections of demos, or live tracks. Still, it's all worth checking out in my opinion. They're a great and underrated band.
Surrender to all Life Beyond Form
Lance of Longinus on Bandcamp
Noise Redemption Prophecy on Bandcamp