Is Covert Operation worth buying?

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Only if you have all marine upgrades.

Buy general and infnatry upgrades first.

You can upload a pictures of available upgrades so that we'll be able to give you better advise.

Https://imgur.com/a/TnGv1lb i will not buy the general upgrade because i dont have premium

Kirjutas Hawks6205, 22.01.2022 at 14:53

Https://imgur.com/a/TnGv1lb i will not buy the general upgrade because i dont have premium

By priority:
Lucky ground main defence
Cheap transformation
Lucky ground main attack

If you have more sp let me know

I still have 5800 SP

Save ur SP. Other upgrades are more important.