Can you share any code you've tried?
So my game has 15 achievements (14 dis-including Platinum Achievement) sorry if this is a lot
This is what I've coded every time an achievement is unlocked
These are my "if"s I've set up
(The 8th achievement is the bar one, I've already done coding for that one)
And this is the Platinum Achievement code on the achievement script
So what I'm understanding based on the code you've posted is that you're very new to coding. That's all right, but you will need to have a basic grasp of how variables (getting and setting them) work in order to understand how to use the achievement code. I really recommend you begin with https://feniksdev.com/a-quick-primer-on-variables-in-renpy/ and go through the rest of the tutorials in that series to see how to declare variables and update them. Then I recommend you read over the examples included with the achievements - you should follow the example very closely and just tweak things until they work how you want. A better understanding of variables will help you see what the system is doing and how you can follow the examples to do what you want. Good luck!