Accomplishments are this:
He found the Phobos Arena.
He stormed the Chained Court.
He fought on Hell's Arena.
He witnessed the City of Skulls.
He wandered into the Unholy Cathedral.
, and history is this:
He started his journey on the surface of Phobos.
On level 3 he entered Hell's Arena.
He cowardly fled the Arena.
On level 5 he stormed the Chained Court.
On level 15 he he found the City of Skulls.
He fled the City in terror!
On level 16 he invaded the Unholy Cathedral!
He fled the Unholy Cathedral seeing no chance to win.
On level 23 he found the Baron Armor!
Then at last he found Phobos Arena!
On level 25 he finally defeated the Cyberdemon.
?
If so - then i think that it's better to leave only History because it's more detailed.
P.S.And, BTW, i just noticed:
On level 15 he he found the City of Skulls.
What the fuck is "he he"?))