I paid around $200 to upgrade my surge to max level and it is the worst investment in my life. Originally, I can get more than 10 kills in the FFA but after I upgraded my surge, everything changed. Now, I cant even kill than 3 even with my 2*12 AT. BOT all become stronger than me, full stars for everything. Moreover, I cannot play with my friends since they will face the same situation. Last, I post don't pay..... and they replied me they will Fix this issues but the situation is actually getting worse, I shouldn't  trust them, they force us to pay to level up other mechs, if I don't do this, I cannot play. So, dont pay, if you want to count une playing this game. I understand company has to make money but it's the worst way I have ever meet