A-Coins 
Get A-Coins:
- From the Daily Login Program Crates
- From the Shop
- From the Progress Path
- As a reward in a Tournament
- From Crates
- From Fortune Vaults
- In the Vault Blitz
- As a reward for completing Daily Event Objectives
- As milestone rewards from Events
- From Referral Rewards
- From Achievements
Spend A-Coins to:
- Get Weapons and Mechs unlocked in the Progress Path
- Upgrade the Rank of Mechs and Weapons
- Grab Credits, Crates, Combat Point Boosters, Tournament Tickets, and Blueprints in the Shop
- Get Blueprints and Credits needed for upgrades when you don't have enough
Credits 
Get Credits:
- From the Daily Login Program
- From the Progress Path
- From Tournament rewards
- From Crates
- As a reward for completing Daily Event Objectives
- From the Shop using A-Coins
- From Fortune Vaults
- From the Vault Blitz
- As milestone rewards from Events
- From Achievements
- While upgrading Levels by using A-Coins when you don't have enough
You need Credits to:
- Upgrade the Level of Mechs and Weapons
- Get some Mechs and Weapons after they've been unlocked in the Progress Path
- Grab Blueprints from the Shop