Idk how to defeat it its almost impossible i can't push it back, i cant dps him he just walks and ends the game?

Hi, Just bought this game and having some issues with it ingame, so i initally realised it when i first launched the game with my FPS counter in the top left (Nvidia perk) giving the graphics of the game and my specs i should be able to run this game without a problem, but i noticed that my FPS would keep going as low as 5!! and this would happen randomly, whether im on menu screens or within a game. Specs - Windows 10 I7-7700 @ 3.60GHz 16G DDR4 4G 1070 GFX ...

Just saw a new update came, any news of what it was? My save file is also removed with it.

i have played this game before and looking for buying again on this account , I am wondering how much time (gameplay hours) does it take to get all the achivements done ? thank u in advance for your response

I got 99% of the game got all star all heroes full weapons and skill. Saw so many videos how to get endless mode is win a map in 4 star I have 4 star (extra difficult 1 life, can't remove heroes, and other) and still can't find endless mode, is there a way to fix it? Even go to version before or something like that?...