I get close to beating stage 16 but its absolute bullshit when you get so close and then all they do is spawn GW tigers, Su-51s and FV stage 2 and one shot everything then keep pushing before you can even do anything as any unit you put out gets nuked. I get that one boss that doesn't nuke the entire map and that shit happens. I really should stop think i've lost over 2-4k fuel attempting this