Please use this threat to post which maps feel overly hard to beat and send a screenshot with it. Also let us know which weapon combos you tried (Main weapons each character had).
All maps are supposed to give interesting tactical/skill based puzzles and should feel great when you master them. Often this requires a good combination of arms and decisions when to rush, when to stand ground, which objective to prioritize (e.g. stop reinforcement by taking down propaganda towers or stop mortar fire first, so you dont have to be on the move all the time)
Please mention the version (e.g. v68) as balance and map design can change and improve with each version based on feedback.