The challenge we face as a faith, is remembering Jesus more, not less.
Our thoughts about the anti-Christ ought to reflect that calling.
Those that turn away from the Holy Spirit, will die - the anti-Christ will do that perpetually.
Thus the anti-Christ will return to dust and only return as an enemy at Armageddon (where the Lord will slay him with the Word of His Mouth).
Even if the anti-Christ struggles with humanity to the end of time, he will be told his only place is in the Lake of Fire - because he does not cease to show God contempt, for all His forebearance.
It seems that you believe that the Antichrist is a person and will return to dust.
It seems that you believe that Armageddon is an event that occurs towards the very end of the seventh age.
Both of these assumptions on your part do not line up with scripture.
The antichrist is a rebelling angel, and the scriptures are silent as to what an Angel is formed from and as such your statement that the antichrist will return to dust is made out of the silence of the scriptures with no scriptural basis.
Now the Sixth Bowl judgement is unfolding at this present time and what we are seeing happening, at the moment, is the process of the gathering of the kings of the earth at Armageddon to be judged for their part in the trampling of God's Sanctuary and His earthly hosts over the past nearly 2,300 years. Isaiah 24:21-22 describes this time of judgement of the Heavenly hosts and the kings of the earth for the parts that they have played in this 2,300 year prophecy. From Dan 9:26b we know that the trampling of God's earthly hosts through their being scattered to the four corners of the earth by the influence of the Little Horn beast will continue until the war in heaven ends in our near future. Paul in Romans 11:25-26 tells us that when the fullness in time of the gentiles has completed the set timespan of the 2,300 year of trampling God's Sanctuary and His earthly Hosts, that, after the completion of that prophesied 2,300 years, all of Israel will be saved. The end of the 2,300 years is in our near future, around 20-25 years into our future and the judgement of the kings of the earth at Armageddon will occur. At the same time as the kings of the earth are judged on the earth God will be judging the heavenly hosts, and as we are told in Rev 12, there will be found no place for Satan and his angels in heaven and that they will be thrown out of heaven down to the face of the earth. In the Isaiah 24:21-22 verses, we are told that the judged Heavenly hosts and the judged kings of the earth will be gathered together and imprisoned in a pit for many days to await the time of their punishment in the Lake of Fire.
From the history of the Israelite people, we know that they have been trampled many times over the past 2,000 or so years, and that this has been orchestrated by the Little Horn beast behind the scenes, so to speak.
Until we begin to properly identify who the Little Horn/ False Prophet beast is, we will be searching for the answers as to who he is, in the wrong places. This is also true for the beasts who influence people groups, kingdoms and empires to rise up and manifest the respective beasts dominate characteristic. The beasts are hiding backstage so to speak behind the curtains props that sets the scene that we are able to see.
The Bible does put a name on the antichrist, but our eyes cannot see, and our ears cannot hear.