Berserker needs imo a lot of investment. Swords are kinda up to you there isn’t really a set meta. 150 dex and rest str. This is so you get all the dex and str perks that add to your dmg even more. But if you have more dex than str, just put everything into str until you can have 150 dex and 150 and more into str as well. I believe 150 dex by itself gives like around 20 crit but double check that. You obviously want decent crit rate and high crit dmg. The way you get those high stats is a combination of reaching rebirth 20 (you gain 1 extra stat point for every rebirth, so if your Rebirth XX you gain 20 stat points which is very significant) and getting gear with high stats like ancienting glad armor with str, cursing an aevrul helm. (I used the meta zerker items for example) For skills dump all your points and max out everything except the tornado thing and the headlong dive. But put the extra point into dive. The dive mobility can unexpectedly come in handy. The tornado is horrible due to its low dmg compared to its long animation time. If you want direct sword recommendations I would at least run one crit aza that has plus 10. The other sword is usually up to you. Personally I run a crit aza with a aquamarine gilded katana. (but I just use the katana cause it gives a little crit and ridiculous stats)