@Rectro @bezo Here is what I was able to make for now, after hours of trial and error :P If you have the time and willpower, please take a look at the two project files I have uploaded and maybe tell how can I fix the lower part of it. I can not figure out a good flow and poly setup for the lover part of the blade The spikes. THX in advance :D I also tried something by adding and extra cut in on the right side of the edge, that extra cut is not on the drawing. So the main goal is to make a game asset, Low poly, but I will also need to make a high poly version so I can sculpt some details on it and make Normal maps that I can use on the low poly to make it look good...
https://www.dropbox.com/sh/4yvnmtgppcram95/AAAGqcQPlMfVeUwJ6AsHDMLSa?dl=0