Talk:General Tips and Hints/@comment-68.110.241.157-20120517071832/@comment-5060576-20120517072521

Essentially yes. Your base card being the higher level(22), i use the Mission Make an Entrance in Las Vegas to gain cards. I then fuse the N cards together until the zombie is at level 10. Then i fuse the level 10 to the higher level card i want to level up. Over time though it becomes less and less effective. Go to the Fusion section on the wikia for more information about fusing.