I’ll be honest, I just earned 10k in 24 hours playing through 4 mission cycles. It is not hard.
Support XP missions are easy. You have Aura and Skyhammer at least who rake in support XP. Most of the time I can complete the highest tier support mission in 2 matches. 3 at the worst.
Combat missions are easy, even if you cant aim. Play as skyhammer and rain down airstrikes everytime you can.
Game mode is easy on an EV map. Escort the EV (stay close to it) or blow it up as skyhammer for MAD game mode XP. Other maps arent so easy.
If you want the credits, play for the mission, dont play for ‘but I wanna play as Vasilli, wahhh’. If you arent good with a particualr merc, dont use them for missions, use them when you are waiting for missions to refill to get better with them.
True, mercs are 50k creds and when starting out it does take a while to get into the swing of things to purchasing them. Once you figure out a system (as outlined above) for missions you earn creds pretty quick tho.
Oh, and dont keep an eye on how many creds you have until you are kinda close to your target, a watched pot never boils.
Currently I only play every couple of days and Im buying a merc every 2 weeks. A new merc every months means i keeping ahead of the additions easily.
tl;dr : It’s not ‘git gud’, its more about playing smart.