There is no mention of Hell in any of the sermons in Acts.
Acts 2:40 "...Save yourself from this untoward generation"
Acts 3:23 "And it shall come to pass that every soul, which will not hear that prophet, shall be destroyed from among the people."
Acts 4:12 "Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved."
Acts 5:31 "Him hath God exalted with his right hand to be a Prince and a Saviour, for to give repentance to Israel, and forgiveness of sins."
Acts 7:53 "Who have received the law by the disposition of angels, and have not kept it."
Acts 8:24 "Then answered Simon, and said, Pray ye to the Lord for me, that none of these things which ye have spoken come upon me."
Acts 10:42-43 "And he commanded us to preach unto the people, and to testify that it is he which was ordained of God to be the Judge of quick and dead. 43 To him give all the prophets witness that through his name whosoever believeth in him shall receive remission of sins."
Acts 13:38-39 "Be it known unto you therefore, men and brethern, that through this man is preached unto you the forgiveness of sins. 39 And by him all that believe are justified from all things, from which ye could not be justified by the law of Moses."
There may be more accounts but I think these are sufficient. And it seems that Hell is not mentioned once. It's not hard to understand how forgiveness of sins could be preached to jews and those that believed in God. However, since Hell is not mentioned what did salvation mean to those that had it preached to them? I don't think that the jews of that time had any idea about what hell was. What were they being told to be saved from?