When I hit level 100 I did not receive my Achievement for doing so. I checked under my profile and it is still grayed out. Nor did I receive the Skill Points for the Achievement (Although this makes complete sense considering the game didn't award me with said Achievement.). Id *really* appreciate it if you could get back to me about this.
I believe you need to complete level 100 on to level 101 to get the achievement. Once you do this & still do not get the achievement, please contact support via this link: http://kanoapps.com/index.php/contact/8-game-support/5-zombie-slayer
Yup all the achievements are for completing things not reaching them. Small distinction but makes a difference