Dam. I have been fighting against Lingering Will for a couple of days, and he is really hard on LV1. I thought Larxene might be hard, but Terra is another level of difficulty. He is very unpredictable at times, and most of his attacks kill you in one hit. Once he started the fight with the drill arm move, and killed me in a blink of an eye. The death happens so fast actually, that even the camera comes little late in the situation(the camera usually zooms right after Sora dies, but here Sora hovers in the air a little while, and after that the camera comes, if this makes any sense at all).
I really want to keep trying, but I am not sure if I will beat him. My best attempt was when I got 5 HP bars down, so maybe it is not impossible. I guess I just have to perfect my methods and just keep trying and trying.