Quote: "He could replicate all the indoor levels ex. Pillar of Autumn, the First flood level, and the final mission. Without issues."
Really
With a little forward thinking and planning you could do all the levels...
But why would you want to remake a copyrighted game?A Huge tip even if it is your favorite game rather make some think that is open source...less likely that your thread will be locked...There are a few games that have gone open source...Doom, Duke Nukem 3D among others.
In any case I find it I unlikely that any one even remotely on this forum can design exact level replicas without having to import a single game material...So why bother in the first place your just wasting your time.
Quote: "You won't be able to have any of the huge levels"
Why not?Why can't you split levels up in smaller sections?You could split levels up in smaller sections much like half-life 2 does.
Have you even tried?
Pointless Assault video
http://w13.easy-share.com/1408971.html