First off, Puppeteer global item that you find in the shop is the most, or second most powerful power up in this mode.
-Dice copied from another librarian does not apply on combat start or on use effects; allowing any librarian to use the full power of scratch that, brawl, or eventually blind faith.
-All attacks are copied after the initial hit. Which in the event you out-speed an opponent and your manikin would still clash, you can clash with the original dice. Furthermore, any manikin can artificially benefit from another librarians speed dice.
-The manikin will copy any attack regardless if they are ranged or melee, allowing double ranged attacks.

The second most broken upgrade is under the mook workshop, afterimage. Normally it's supposed to be the event of repeat the first die that successfully clashes against the opponents in a one-sided attack.
-In effect, Repeat the first die if: it succeeds in a clash; UNTIL you hit the opponent in a 1-sided attack. (I haven't tested if it fails, but you are able to repeat the same attack against any counter dice until they are all gone.)

As for glitches, only 3 (4?) so far.

1, There is a random event in the final act where you are offered 4 choices on a screen with blue & red dice. None of the choices seem to be labelled.

2 ,Currently doing a run with union workshop; so far the prosetic parts are broken?
*Edit It seems to be working now. I think I had to leave and restart for it to fix.

3, Surprising cheese with page equips, could be a bug but I think it's still kinda cool.
If you equip a unique page that belongs to specific key pages, and then swap key pages: You are able to keep the unique page on a completely different key page. This only works on a difference of 1 key page, but running Rip-Space on Maxim's keypage was fun.

There was also a weird thing with Yujin's page where if you equip it hp will not decrease, but if you assign the passive it will. I was pleasantly surprised that I was able to enter the final act with 273 hp.

I think that's all for now bug wise.

Another bug I found is that you can buy an unstable speed die in the shop, but it does nothing nor can it be equipped anywere