Rebel Strike Force is a mod changing the regular HL2DM setup into a more on teamplay based game. A player can choose from 8 different classes to fill in a certain role in his team. There currently is only one gametype called "Objective". The idea is that you and your team mates try to complete a given mission while the other team tries to prevent that from happening.
Displayed here are several screenshots of the loadout screen, showing some of our classes.
Manhacks are for the Combine!
Alyx hacked a shitload of manhacks for rebel use.
Never thought I say this but:
"Good story bro"
Tbh, considering that everyone uses the same equipment throughout the entire game...well, at least in the game, there are possibilities of Overwatch/Combine facilities being captured :P
You could always switch the Gravity gun and the Manhack around for the two classes.
It should say Spas-12 with an S