Level 1: Main improvement comes from removing lag and especially beat the boss ~ 30 frames faster.

Level 2: Most improments is by reducing lag at stage 6.

Level 3: No more very and very annoying sound at begginning of this level.
Stage 8, before anyone asked me that question, I answer you. When Simon take the stairs, it looks like that I've lost time by shaking him but in fact, it is faster by 1 frame. :P (Note that it is only useful at this place throughout the game) The bosses, mummies, strategy in Famtasia was almost perfect. However, I did managed to beat it by 8 frames even though the randomness wasn't in my favor.

Level 4: Stage 10, it lags where Famtasia doesn't. So, I lost 8 frames there and there's nothing I could do to prevent that. :( However, that's what I had expected when I started doing this run with FCEU and in fact, I am lucky that it doesn't have lag in precedent or later stages.
Stage 11 is crazy.
Stage 12, Some people will think that crouching Simon isn't a wise move but in fact, it managed to pass the dragon bone 2 frames faster because it prevents awful lag.
The boss is faster by ~10 frames.

Level 5 and 6: There's not pretty much improvements. They were almost perfect.

In overall, I used extra hearts more wisely. Reducing lag and accuracy ++ at bosses are what makes the most improvement in this run. Except for mummies, strategies for beating bosses were already the best. Also, I finish the game with 202170 points, + 21000 more than precedent version. There's some places that I could obtained more 4000 or even 8000 points but there was lag.

I would also thank nesrocks for finding memory address for bosses' energy. It is rather useful.
And thanks to Genisto for helping me doing the almost perfect first version.