it is very repetative but u could say that about all psp games.
the graphics are incredible for psp
the timed events or w/e are kinda hard and the god of war 3 does it much better. they want you to press a random button within less than a second it seems or you get punished by taking a large chunch of your hp. usually it is hard to guess which they want or if they want the analog stick instead. the ps3 does it much better by putting it in the side of the screen which matches the controller.
the boss fights are kinda lame i heard this was a large scale game but so far the only boss *spoiler* was just a big head. you dont even get on top of it like you do in ps2, it just waves its head at you and sometimes shoots fire. if i wanted small and stupid repetative bosses that involve just spamming random attack buttons i would have bought dynasty warriors.
i would suggest u get a ps3 and get the collection pack instead or wait for god of war 3 the psp version is kinda boring.
For a PSP game, Chains still has some of the best graphics. Nearly PS2 quality. When I first got the game, I was a little confused, though. I got it after getting my GoW PSP (confusing?) and hadn't heard much on it. I had played the first game, so it wasn't till I got through half of the game before I realized it was set before the first game. It's a great addition to any PSP game collection, and I highly recomend it.