Sense this was the first Armored Core game I have played I didn't know what to expect but this is now in my top 5 games of all time. Game play is intense enough for controller-throwing defeats. The game is somewhat challenging in itself but if it's too easy then it offers a "hard" setting unlike any I have played. Instead of giving the enemy's higher damage, hard adds random extras too the missions such as "Oh, no there are more Arms Forts than expected" and instead of fighting one boss there might be two or a extra NEXT to fight but it a fun way.
The mech creation was a great part of the game too. I wish i could tell you how many weapons there were but not going to count or look it up but know that there are weapons that just want to make you break out in a maniacal laugh (OMGACannon, you'll know it when you see it.). But there were a lot of them and parts and you can tune your mech with point you get from defeating bosses and winning mission on hard.
There are multiple paths you can take and three ending too the story and one mission that is beyond freaken hard but still was extremely fun to beat. If you get it for the 360 (lawl no achievement ps3) then the achievements are fun to beat although i was disappointed to find that half of them are only for online play where there are about 10 people playing.
In short, Love the game. Rent it. Play it. Send it back.
this is a realy great game the score does not do it justice at all im a long time player of this series an this one is good but it is not as good as the other Armored Core 4 is better but this is still a great game just give it a try what do you honestly have to lose? lol