Most likely the best of the series so far.
User Rating: 9.4 | Armored Core 4 X360
I have one word for this game...AMAZING. i bought this game the day it came out and it hasnt left my xbox yet. the graphics are phenominal and the gameplay is fast. although it is a bit easier than the third one, it is still definitely a challenge once you are past chapters one and two. if you arent a fan of the series, i would suggest renting this game first because it definitely isnt for everyone. armored core 4 or any of the others in the series are nothing like the other mech games such as chromehounds. its extremely fast and pretty much every part is customizable.
for the people who have never played an armored core game before, this one would probably be a good one to start with. the first few missions are easy and the beginning has a detailed tutorial to help you through the controls before you get into the real action. 
