The Complete Commando Guide

[Solid Scorpion]

I tried all the 4 combos but backbreaker was the only one working.

Are the other 3 referring to recommended skill sequence or something? (the combos I'm looking for are the ones that will cause the combo icon to pop up, with additional effects)

[Battlegrinder]

I tried all the 4 combos but backbreaker was the only one working.

Are the other 3 referring to recommended skill sequence or something? (the combos I'm looking for are the ones that will cause the combo icon to pop up, with additional effects)

Backbreaker is the only actual "combo" in the group, as it was programmed into the game. The others are informal combos I've developed, and are only a sqeunce of moves that work well together. I apologize for the confusion.