well finaly done with the last lvl to get the badge and wont come back. So much grinding is no fun at all, there is no way to reset upgrades so you can play around with your weapons so I never tried out much but just sticked to the ones I picked first. Come on devs Ninjakiwi was a guarantee for fune once, now you just want my money
research definitly needs a reset button, trying out different setups is not possible as you have to spend hours just to get one weapon type up and hours again for another type, thats not worth my time
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