first - for new players, it's going to be next to impossible to get past the 3rd boss.
second- the new cooldown system is awful, compared to how much items you should have stocked up versus how long youve been farming (if youre actively farming). i would say the item system needs an overhaul in general, or something similar to the 0.1h version, but obviously not as easy. it's just not fun playing against AOE bosses when the AI is so awful. you HAVE to use the items, but you can't. you just get raped.
third- leveling.. farming.. just awful now. at later levels you have to basically AFK overnight to get 5-10 levels now. on one guy. lmao.
fourth- consider changing the shop system. it's not done well. maybe get 2 items after you clear the 3rd raid/2nd raid, or something along that line.
reward your players for leveling up and beating content, not hold them back by nerfing every single way to progress through the game.
adding content is nice. halting progression isnt.
after you get to the last map, and then go back and complete the 3rd from last map (last - 1st - 2nd - 3rd), you get the end of the road achievement, and it shows the last map is beaten. not really a huge bug, but it is still broke.
 "Idle Raiders"){kind=icon}
 "The Pix"){kind=icon}
The achievements for second map hasn't been added yet. We will fix this in next update.