In the previous version (2.02), if you wanted to quickly gain experience, it was enough to complete levels 18 and 20 in the swamps (the enemy does not move, which was reported), which gave level 18 and made it easier to complete the remaining missions. Currently, these 2 levels only give you level 5, which means you can't cross the desert with the new robot, not to mention the swamps or try to fight in PVP.