I use a couple of builds:
The first focusing on magical damage, using the Thorn Staff (Which is more cost effective than the Frozen Tome IMO. Plus, I just like the bouncing effect.
) and Elf Sword. 3 Book of battles +2 before you upgrade the Upgrade shop, and past that, Brown Books, as they're just more cost effective for upgrading. Then the rather obvious (-but awesome) Wizard Slippers. Weapons aren't really worth upgrading. -probably best to focus on the Books, really.The other build is a speedrunning build which... Is a bit out of control. Using the Frozen Tome or Handcuffs (They both have +1 speed.), you basically kick and/or spellsling your way to victory. I tend to use one of both so your kicks can atleast become decent too as a backup when you're out of mana. I also use x3 book of winds (You see where this is going.), and Winged Boots, for the extra Jump/Speed. Again, not really worth upgrading the weapons, the Books will buff the Tome, and your kicks are a backup either way. Jump height can net you some really mad shortcuts too so it's worth the time to upgrade. Should also be noted that for speedrunning a couple of levels, a Halberd might be a good backup to hit lightbulb switches through walls.
Very early-game I also used an Axe/Horn build which is okay, but incredibly lame in late-game as Axes are instantly outclassed by pretty much everything past the Thorn Staff (The Thorn Staff itself being basically a Direct Upgrade.). The Axe still retains some credibility when playing Melee builds though (If that's your preference.), but is easily outclassed/completely replaced by the Amethyst Blade as it costs nothing to fire and it too also goes off Physical Power. -as a secondary weapon, it still kinda falls short, as it's probably best to put Handcuffs as your secondary for improved kicks and the +1 Physical Attack. Though Axes are a nice, spammable Physical projectile, so at that point it's totally personal preference between Kicks and Axes.
...If only there was a Book Of Thorns weapon. Now that I'd use! :V
