Armada 1 Assault Ship
The game Star Trek: Armada has two kinds of ships, that can be considered as assault ships:
While being definitely also a heavy cruiser, the fact that it's special weapon, the Commando Team aims more at capturing other units and vessels makes the SuQ'jagh more an assault ship. Same goes for the Cube. It's Holding Beam is definitely meant for taking over opposing structures. Still it is also the most powerful battleship.