Action Role Playing Game

Development of a fantasy action role playing game. Need the following systems built in UNITY 3D - Please do not bid if you aren't familiar with this engine. I would like each system to be extendable and editable so that I can generate different content easily - IE. types of weapons (Model file, Damage, range, special abilities etc), AI type - Define model, movement speed, sight range, damage etc.etc. Systems; Generic AI - Think usual RPG AI - sight/hearing range, character will attack you if within range (think WoW Mob AI). Melee System - Hand-to-Hand combat with Shields, Would like a cost for simple Melee, as well as combo ability (Three different strikes). Ranged Damage - Think Bows, Crossbow etc Visual Effects Ribbon/tracer rendered effect on shooting bow, swinging melee weapons. Damage amount number popup over enemy head. Again work must be completed in Unity 3d Engine. Please do not bid if you do not have experience with this engine, or portfolio to show with related game work.