I've notice that anyone how gets a chem that's all they ever seem to use which seems really over whelming to me and it seems to change the out come of who is holding the base. I complete understand why they use they use it so much. It just seems to be a big bump in the road I can't get over. I completely understand why they only use that gun. Its OP with some it it's interesting features such as the explosions it creates can hurt someone standing on either side of a door. Also its crazy spam and can just cut through the groups of players with ease. Another feature that I just can't get over is the poison slime it uses slows everyone one down no matter what and it shoots the goo like a grenade launcher that hurts you when hit.
I'm a heavy baser and I was wounded if anyone has found some kind of weakness or disadvantage it has to a particular gun. I've been having lot of problems fighting against it and could use your helpful advice or ideas.