Is there ever a point where you can go back in time but keep your equipment/weapons? I don't see how achieving some of the target times is possible unless you can skip leveling up.
It is definitely one of the best games on PSP - I'm not sure why there is no hype. This is why the PSP struggles - they have great games that work perfectly on a handheld (Exit, Everyday Shooter, HSG, etc.) and they don't get promoted but they shove GTA down our throats when most everyone would rather play that on a proper console.