Ok the way to get money there are two simple ways:
For lower levels:
go to gears university then fight "mega spider" you will gain money overtime
For higher levels:
go to assault mecha in the star captain bar and click options then unscale the fight, next click duel and type 222. this is the I.D. of Judas McPherson fight him over and over he gives good gold and xp.
I use this method and i got 275,000 credits in less than 1/2 an hr by fighting I.D. 222. (i was using advanced wb lvl 30) to see what it did for me type my I.D. in at assualt mecha:2834114 (unscale the fight)
Good luck happy hunting
(New) Make sure you're a black belt master in energy sword fighting, get your best sword (or buy one) and go to Planet Romero, kill Zombies. They give you 100 exp and 700 credits each. They have about 150 health. Trust me, I'm level 13 (when i edited this answer) and got 52500 credits easy!
first go to labyrinth(no specifice level required or mecha) just have a mech and weapons (but be shure you can beat minator atleast) battle 1 monster get a healing spot on the map battle another do the same if u can stick through the boring idea of it ull get tons of experience
alternate Point of view
Dodge as many as possible then keep killing the minator everytime he spawns (then go get health) do it again ( the top part is a lot faster by the way) MAKE SURE U GET THE TREASURE AT THE END THOUGH!!!!!!
send your account 2 hedeyasu@gmail.com i promise i will not steal your account or change the pass i will get u loads of money i have about 100mil if u want that money send your account 2 me again hedeyasu@gmail.com
U buy them at the shop or farm until u get black gralats (black=1000 or more)
Hack using a mechquest trainer
Email me with your mechquest account and Tell me the level and amount of money you want and I will get it for you with my mechquest trainer Email is maxwellzhu123@gmail.com
you buy (with real money) a t-shirt made by the creators of mechquest. then there is a code at the tag. then you put that in
heaps
about 20 bucks in real money!!
play the game
get heaps of money
Farming means u are focusing on earning money and exp,
so they make heaps of money
because it is good job and heaps of money
ballyhoo or be a star captain or buy nova gems with money!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
yeah, heaps
You don't.