Help with ripping Mighty Gunvolt Burst sprites and background)

[No Handed Man]

Hi there, I have been trying the few days to rip off certain tiles, backgronds, and some sfx if possible of the game Mighty Gunvolt Burst, I noticed my  first sight that if wanted to rip them fast and precise I would need to get a little of help from an expert on the field. So far I tried to take screenshoots of the game and then try to re-construct them to be as similar as possible to the og ones.


But I'm sure there is another easier process rather than doing this. hell, I cant even get the backgrounds so there must be something I must be missing.
Please, any suggestions??????