I use a similar slow approach. I enhance only one level per day for the daily routine to get 10 a-coins. I was able to buy the railgun in the inventory after three months.

So, you use the commons, then the uncommons, the rare, epic and legendary last.  You give yourself a hindrance, but if you enjoy it that way, well, your style of play.

Its a good idea.

not all weapon energy levels, but all types and mechs. Get the acheivements and move on

i litterally won a tourney with just letting matchmaking let me win some and loose some and  was sitting on a hoard of resources. I got the robot heavy weapons dude and 20k implant parts in second place no money real money spending.

If you go too fast you run into my issue and have guns you cant get kills with On crap mechs too. Atleast,  not unless you maximize the power of the weapon which you need to play a long time and gain lots of power to get. Atleast you can hide with the starter mech with sprint and destroy a mech with max machine guns on hime base control point. One mech at a time.