Play Barbarian Onslaught Online Game. One of many Fighting Games to play online on your web browser for free at KBH Games. Tagged as Action Games, Barbarian Games, Fighting Games, and Onslaught Games. Upvoted by 32 players. Other games you might like are Gunmaster Onslaught and Onslaught 2. No download or installation needed to play this free game. Hope this game brings a little joy into your daily life.