CMON B Sieged Sons of The Abyss Board Game For 1-6 Players. 60-90 minute playing time The Assault Units, the Krohns, will advance towards Zone 1, and once there, they'll attack the Heroes on the wall and try to break into the Citadel Gargohs, the Support Units, will advance towards Zone 2 and, once there, they'll hit all Heroes in the Quarter they face Molens, the Heavy Units, will attack directly from Zone 3 and damage all Heroes and buildings in the Quarter they face Each monster figure on the board will activate and perform their actions according to its rank. The Heroes must coordinate their actions well to share resources