Even though I have played this game for about a year, I still feel that I am a new player. How do you beat a nexus?
As this is in the CW1 section:
Spoiler
Simply connect the totems
For CW2:
Spoiler
Aim at the nexus with a dark beam AND remove all creeper hiding behind the nexus (use conversion bombs). Keep using CB's while one or more DB's hit the nexus and it should die sometime.