(adsbygoogle = window.adsbygoogle || []).push({}); Got too excited and used Save Wizard to instantly get to level 50 and in doing so missed out on that trophy.

https://www.nextgenupdate.com/forums/ps4-game-save-modding/1023180-assassins-creed-odyssey-custom-rank-can-fix-missing-health-caused-sw-cheat.html

You just need to find the amount of xp you need for level 24 and 49