I dislike those congratulations when people don't even know you personally. But this time I can't stay silent! Surt! You're one of the best translators I've ever met. And you're good guy as I think. So all the best to you. Celebrate your level up as good as it's possible!
Since I know how you like Warhammer I asked Google to find images for celebrating Birthday in it's style. If image isn't from Warhammer, so this is Google's mistake
It’s your birthday time again;
It’s true; there’s no denying,
Another year has come and gone;
You know that I’m not lying.
So for you, the birthday person,
Here’s what I want to say:
I hope this birthday’s the best one yet,
In every delightful way.
So happy birthday to you.
Have lots of birthday fun!
May your birthday wishes all come true,
Even if you have a ton.
By Karl Fuchs
А вот это уже сами переводите :)