While Corite is the main premium currency and Matrix Credits handle most other purchases, Mission Tokens sit somewhere in between in Mecha Break. These are required for the Matrix Contract battle pass and purchasing new mechs. Earning the Mission Tokens you need is going to take some time, especially as they all expire at the end of each season.
If you played the previous playtests, then scrub all that information from your brain, as Mission Tokens have been overhauled quite significantly since then. In fact, these used to be called Merit Points, and you'd earn them by converting the older version of Mission Points. There was also a weekly limit of 6,000, time-gating your grinding. Thankfully it's much more straightforward now.
