I talked to Zyapguy, the creator of this game series and all of Bepis, and he said that he lost the file download link to Bepis Adventure 4 therefore, I assume that this game can no longer be speedrun unless if zyapguy is going to make a remastered version of the game in which he said he is going to do.

I will be waiting specifically just for bepis 4.