get the best of what you are certified for. different creatures have different protections and weaknesses. i have fwg, republic, striker, tangle, and as a bh, scatter. if you can get a well made gun and get a good slice, you should be good. my fwg is my best gun, but i paid the most for it. if i see something better than what i got, i but it. shop around and compare stats. ask around about a good weapons dealer. powerups help but run out so fast so you have to carry a couple crates.
stop your whining kids