Originally Posted by Amazed
well to ensure that you will jump on the next enemy's head just repeadily tap A untill the alien lunges onto the next enemy's head instead of just pressing A once... Hope that helped.
This really helped me a lot, guarantees the lock-on as long they're in the right spot.
Thanks for the vids, just finished off the achievements using method 1!
Best advice I can give for others going after it is to only chomp the guys who run down the hill all the way onto the flat ground where you're standing, the ones who run down it and then sit at the bottom of the slope (still slightly elevated) can occasionally be missed and aren't worth the risk. Don't chomp the people who pop up under you on the flat ground either, let them run off and get them when they eventually come back down the hill onto flat ground.