The konami code section isn't in the LN (though it is very much in line with some of the humor used), and modified/replaced combat portions. Yukine doesn't offer to bar the way for Takioto, instead Takioto yells and charges ahead that he'll leave the area to her to get to Ludie faster. Yukine then helps stem the tide for Takioto and yells she wanted to save Ludie, but now she has to protect him, too. Ludie is also in much better shape compared to her LN counterpart (no disheveled hair, torn clothes, cuts, or dust/dirt).
The ogre appears slightly faster, and Ludie does not have time to admonish him for leaving Yukine behind in his haste.
So relatively minor changes, mostly for pacing, though I wish it had kept the Yukine bit.