Help me with my weapon! Please ^^U

[Karurosu]

Hi!

I came to ask a question about my gun. For you see, I'm a level 21 and see that at the beginning of Act 2, the difficulty has soared xD'm a summoner to clarify.
For the problem well, I can not level up my gun (has blue name), but at roulette cemetery dwelling could not get the gun, and now I am well, and I have no specific class keys. What I do? The feasibility of moving putting weapons will be better or getting and try to get the damn key? In the latter I'm not lucky, many chests but no haha key.

If you can give me some advice, I thank you =)

 

Thanks in advance.

[Karurosu]

My weapon dont ask for upgrade item, so i want a weapon that can be upgraded.

[Eckogen]

Are you wanting to upgrade your weapon, but need a "breakthrough" item? When you hover your mouse over the item required as an offering to upgrade it also tells you where you can find such weapon. Also, if the breakthrough item required is a blue, than you can also buy it off the market place.