Well, this is a bit questionable submission, because the game loops forever and the all levels are basicly the same.
I played only four levels.
I used FCEU 0.98.13 nitsuja
Aims for fastest time
Takes no damage
Uses glitches
No warps or passwords
Plot of this game is that, spy (or someone like that) goes to a building to retrive some important documents (which are behind those red doors). The building is 30-floors high and full of thugs dressed in black, who are not going to solve problems by talking.
First two levels were kinda easy but the third and fourth were very tricky. All the red doors and escalators are entered earliest frame possible.
There is one glitchs I use, entering elevators when they are not supposed to be enterable.
In the second level in floors 14 and 9 I had to stay a couple frames in the red door because those thugs would have killed me otherwise.
And the same thing in level 4.
I'd like to thank Randil and nitsuja for tips and because they followed my progress.