im assuming there are multiple paths towards the top and Vergil just found a shorter one ( he probably did fight other guardians tho).Can someone explain to me how Vergil and Arkham traversed the Temen-ni-Gru? Dante had to gather keys and demonic artifacts n **** while they kinda just strolled on through.
While not as much as Arkham, Vergil probably knows more about the Temen-ni-gru and the supernatural side more than Dante so that probably aided him with traps etc. After the climax he just used the same way as before, now clear because of what he did before.
DMC3 is interesting as the bad guys are in the same boat as the good guys since Temen-ni-gru is as much an enemy to them as it is to Dante and Lady which is easier to make a campaign for Vergil and Arkham (in theory).
hope this helps.