CrimeCraft Information for PvE
If you PvE'd to level 6 in CrimeCraft, if you've paid attention you probably got a few quests. If you have not, then be sure to do the trade skill quest, you did save 4 of each container right. If not, you have got some grinding X-Align Shipping to do.
You had better to set a goal for yourself, and if you want to be a sniper, LMG user, Rocket Launcher. Look at the skills and build a spec. Keep in mind that heavy guns take 5 skill points, some of the neat utilities take one. You can decide if you want mines, grenades or heal items, what protections you want and so on. Much later you can get a unique skill for your heavy weapon crimecraft cash that costs 3 pts so keep an eye on that as well. Some of these abilities, like grenades, can be advanced to do more damage for more skill points.
Practice with your weapons of choice as much as possible against bots, get a feel for them, how they work and their limitations. There are definite balance issues in the game right now, especially with modded weapons like Shotguns that can hit from very large ranges. But don't let that affect your decision, each weapon can kill and does kill a lot. The most important skill/weapon in the game is your experience with your chosen death dealer. The more time you spend the better you'll get.