I've been cleaning all the bots on the 1st floor using shotgun and some
grenades, nothing move after that, yet the counter still 2 more bots on the
level, I've searching everywhere thoroughly (even cleaning up the second floor
too) yet I found no bots still standing, can anyone help me on this?

Hi, thanks for the report! :)
can you please provide the savegame (on linux in ~/.freedroid_rpg .sav.gz as
well as the .shp are needed)?
I'd also like to know what eversion of the game you are using (main menu, lower
right corner)

I thought we recorded the version of the game the player was using in the save
game? I remember writing a patch which added this to the meta-data of any
screenshots.

Anyways if we don't have this recorded in our save files, we should add it.