Steam Achievement Missing

[truthless]

I recently went on vacation and brought my laptop, which still has Warframe installed regularly instead of through Steam. Internet being poor where I was, decided to not redownload the game.

 

Now here's the rub. While on vacation I picked up the Brawler Mastery 1 challenge. When I got back home, this achievement was not synced with steam. I kept going with the same fist weapon until I got the Brawler Mastery 2 challenge, which also unlocked the corresponding Steam achievement - but the Brawler Mastery 1 is still under "so close...".

 

Is there some way for me to force Steam to recheck my challenges and update achievements? Will a reinstall of Warframe (via Steam) fix it?