I ended up Marathoning this Friday since I didn't feel too good and needed something brainless to watch, and ended up enjoying it despite the flaws.
I found the concept kind of amusing, since it struck me as Robin hood thrown in a blender with a few other concepts. Recognizing the some of the ideas they were adapting helped considerably, because I was able to kind of guess at the parts they fast forwarded past in the breakneck pace of the adaptation.
As far as the cast goes, I'm curious to see what everyone is like when given a chance to develop beyond top level tropes. I'm ignoring Tigr since he was pretty obviously both a Shirou Expy and only sane man to make him a better reader avatar. Elen was very interesting leading lady as aside from being the pants wearer of the duo (figuratively speaking), I liked how her lack of a surface level filter made it hard to tell what her actual feelings towards Tigr were. Lim was pretty boring all in all, being effectively replaced by a bishonen by series end. The Maid left me wondering if
Arawn knows where his loli got off to. Mila started weak and finished passable, being the token Japanese student empathy target character with absurd legacy pressure. (On a comical note, at least one character from the OP never even actually appeared in the show.)
The ending ended up being extremely rushed, but it was at least an ending. I enjoyed the story and at some point I'll check out the VNs to actually see the whole thing rather than the abridged version.
The OP is actually really good, too.
I'm giving it a 6/10, but it would be higher if they'd had more time for the story and hadn't failed at foreshadowing: Several of the battles had perfectly normal tactical tricks go unforeshadowed, turning them into pure asspulls. They also kept foreshadowing something with the Main character's bow that was not only never explained, they foreshadowed it again during the last minute of the finale, leaving it as an obnoxiously unanswered questions.