First of all, he is a good and sympathetic person who helped and continues to help me to this day. I have known him for quite a long time and our acquaintance began with the “Customizable Weapons” / “Customizable Protection” plugins, which he helped me understand. 
After that, I turned to him more than once for help in writing plugins and fixing existing ones. 
He made me a plugin that allows me to melt custom items in the stove, as well as receive custom items at the exit, which works to this day! 
He also made me a plugin for quarries that are capable of digging custom items (for me it was ores like gold) and that work on parts from the engine. 
Also among his works was a plugin which is an addon to the “Customizable Protection” plugin and the principle of the work is that armor buffs only work when fully equipped, which made it possible to create various armor sets for going against bosses. 
Among his latest work was an addon to the Admin Menu that allows you to record your custom items on the server, which will be displayed in the Admin Menu items, making them easier to obtain.