okay, this one mission is the only mission I need to complete in order to finish all the chapters in Weapon Master mode. I have tried everything that I know of to defeat these guys, but nothing works. Chapter 4 Stage 3 - Extra Mission Someone please help me on this one. Everything else is complete except this one Extra Mission. That I know of, its the only mission I need in order to unlock the Lizardman (completed Subchapter 2, and nothing happened).