Unable to unlock "Leapfrog Girl" and "Endorsed by Cordelia" Achievments

[ohmanimblind]

Is anyone else having issues getting these two ? I'm so close to 100% completed, these are the main ones I need, but I swear I must've leapfrogged 30 times in a row and still no achievement. Same for the head shot achievement, I replayed levels multiple times just to not get it.

[burumanet]

Leapfrog is extremely nitpicky. You have to do it ten times in a row almost immediately. Basically easiest if you are going back and forth over the same stunned zombie. If you miss immediately climbing back over him the counter resets.

For Endorsed by Cordelia you need to turn auto aim off for the gun and use manual mode. The headshots only count if the head pops up into the sky with a pink trail behind it.

[Player Zer01]

the leapfrog one you have to do without rolling, attacking, etc. best to kill all the zombies in the area youre in and just do it on the last one there. the headshot one is another finiky one as you can one shot a zombie and think its a headshot but its not.