"To celebrate this achievement" means to acknowledge and honor the successful accomplishment of something by participating in joyful activities or expressing happiness and pride. Full definition
The aim is to boost the number of females in engineering roles by celebrating achievements of women in the sector. (qaeducation.co.uk)
This exceptional show gathers together an extensive selection of his most famous works celebrating achievements in painting, drawing, print, photography and video across six decades. (artmattermagazine.com)
My little sister is graduating from college this weekend so I will be celebrating her achievement with family! (littlejstyle.com)