If you have are starting to play super mechs... know that once you hit level 10 and level 20 you will not be able to use a lower level mech then level 10 even if you use a lower level mech level.. same thing with level 20.. there's not other areas where that happens so just be prepared and plan on this..
for instance
next level I will have my mech level, level 20 even if I have lower level equipment.. if you get stuck at one of these spots.. just start pounding it out on single player...
I saw that someone didn't know about this.. and figured I'd give an offical WARNING