My friend Levi and I just spent several hours on this. Here's what he has to say:
"Upon my investigation of this puzzle, i have came to the conclusion that there is not a legal answer that would result in your opponents life points reaching 0. My reasons for thinking this involves the step-by-step process of every legal move that could be presented.
The combo that is being prompted to be found revolves around the use of Junon to banish a book from the graveyard and then using necroface to add it back to the deck, and then using grimoire to retreive it. Junon's effect also removes Dark Armed Dragon from the field, making for a direct attack. The ideal situation is getting the book of Torah and the book of Hygromantei to increase junon's attack and making her immune to traps. The steps leading to this are
1. Banish Torah with Junon
2. Summon Necroface (using its effect to add Torah to the deck)
3. Activate Grimoire (Adding torah to hand)
4. Activate Torah
Which then leads to a 2500 direct attack, but you are unable to finish the opponent off due to the fact that necroface is still vulnerable to spells and traps.
The issue with using temper is that if you normal summon him, his effect merely lets you special summon 1 level 5 or higher light or dark spellcaster from you deck. at any time where he would be legally summoned, there is no target available in the deck. The only level 5 or higher spellcaster provided is Chaos Sorcerer, but he is in the graveyard and their is no process to recycle him as you can do with the books.
I also experimented with using the grimoire first to reach for Hygromantei, and then using junon to banish torah and summoning necroface (once again the summoning of temper is useless) to add torah to the deck, but there is no way to draw.
Heavy Storm and Heiron are also provided in which this scenario could be achieved, but neither of them are usable in anyway (as is doomcaliber knight, but he would result in being useless as well)
There is also the idea that if necroface is destroyed, its last effect goes off, but this is not beneficial to harming your opponent.
Wrapping it all up, due to the fact that an extra draw is not present, the means to attack for game are simply not there. If there is a solution, i am very interested in knowing it, but i very strongly believe that this problem is impossible."