pretty good
It was fun for a while, but it got repetitive eventually, but like you said its a beta so that makes sense.
one thing I would recommend is, since your already giving it an assassins creed vibe, to make hiding spots to lower the alarm because after one kill, the hidden blade basically becomes useless since the enemies always dodge it when in yellow or higher.
So anyway, it looks good, has good music, fun
I can say I am looking forward to the final product of this.