I haven try replaying the same mission so I dont know if we could earn the credits over and over again but how do you spend your credit?
so far I bought the turret for bunker only... The best defence is offence

I usually try to buy the stuff for units I use, you won't have enough at the end of the game to buy all of the armory stuff so you have to choose.

Personally I bought all of the base stuff since I found them quite useful.

Then unit stuffs for the units I mostly use (Wraiths, Battleships, tanks etc.)

Yup, me havent buy anything yet...... Kkakakakaa.....

I wanna keep until higher unit appear.. kekeke

hmm... i think i got it wrong
the turret thing is suppose to be that zerg research thing
I bought that add 2 units in bunker i think

Yup... hahaha......

credit always not enough, and need to spend wisely, especially on hard difficulty. i regret spending on fortified bunker, should have spent on turret so can defense on Outbreak mission.

That Protoss and Zerg research thing can choose 1 out of 2
but the credit ones buy anything you like

Can the credits be earned if you redo the mission?

I have not tried but I do not think you can earn the credits again, would be a bit easy to spam like the first mission over and over in 10 minutes and buy everything from the beginning.
Kinda defeat the purpose

I played war hammer and they allow it. Nvm... tonight try and c
what if play on other modes such as casual, normal, hard, brutal

damn, is the credit really limited?I really hope to buy all of the things...anyway to earn more credit?

btw, should we save credit to upgrade than to buy mercenaries?feel like they are just wasting our limited credit...

Marines are given free
wonder why firebat are not available in multiplayer
I tried carrier rush against easy enemy and very easy enemy
still very noob

I definately wont spend any credit on mercenaries. in game still need mineral to deploy them... FTW... double payment

caltex station

For me I just bought upgrades for units that I will use. So far I haven't got the feeling that I'm lacking in credits. Not to mention I hired some mercs as well lol (again not all just the useful ones for me). And try to get all the research points cause if u max Zerg/Protoss research, extra research points will be 10000 credit each.

mercenaries?? i suggest you to try battlecruisers mercenaries... huahaha...

Sometime in the future, you'll regret not getting half the mercs. The Siege Tank mercs are SO useful.

I agree that the Siege Tanks ones are quite useful in the later games
Quite powerful.

hmm so far i spent credits on:

marines: stim pack + life
medic: build medic without reactor
marauder: concussion nades + life

that's about i think.

zerg research, erm, bunker turrets, perdition flamer turrets
protoss research, not enuf points i think lulz.

I'll keep the credits till i fail mission then only c which to buy
so far still ok... finish 7-8 campaign only

Used a lot to buy the stuff i use,like marauders,marines,medics,goliath and siege tank.

Still prefer the good old IG style.

Maybe now more money to vikings too.

Marauders concussions grenades are very good and helps a lot until the end of the game, marauders were quite a big portion of my defensive line up to the very last mission.

I also took the bunker turrets too, helps a bit.

Medic are good at beginning but I found myself not using them much at the end of the campaign, most of times I use marines/marauders in bunkers only so medic pretty useless at the end.
I am redoing the campaign in Hard now so I might change my credit allocation a bit more