Tsukihime felt a little basic. I wanted the story/characters to be fleshed out more.
While Kara no Kyoukai is really complex. Every episode feels like a psychology test.
I really liked part 5, with the round building design. How it was made to cheat people into going to one apartment, but actually going to another. By using combinations of things like a turning elevator, fake numbers, complex wall colors to keep people occupied, and a similar-looking outdoor landscape. All to muddle the brain.
It's kinda like some classic murder mystery stories, just much more detailed.
For Fate/Zero ep01. Dunno why people say it was boring. It set up the characters really well. Do people actually expect saber to whack gilgamesh this early.
