While talking about focus on cold damage, I didn’t mean that he should leave Fire Strike and use another skill. He just need to find cold gears to support his cold damage while using FS.
Check these, especially gears, skill points usage and devotions; this game requires some serious reading. My suggestion only for the save the day, when you find some gear and reached 100 things gonna change. I made some of the mistakes you did while playing my first character, like not taking RR etc @malawiglenn helped me a lot back then, so you’ll learn things in time, just have fun but if you want your build to finish ultimate and farm some items to your build and your next builds you need to play Cold damage. Amastra Blade Burst skill is for mainly his second node Lethal Assault’s buff, it gives OA, Cold damage and Acid damage, when you have the Nex & Ortus blades you will convert all the acid damage to cold and fire damage so don’t worry about it. If you somehow don’t like the ABB skill(like me but it’s a great boost ofc) you can check my build also https://www.grimtools.com/calc/4NOqE3oV but I really suggest you give it a try to ABB first.