With a very unfair system of extremely difficult contracts and some weapon tasks you should just call the the Farm Wars because players often resort to farming just to unlock such requirements.
still have not returned my izh and pdr i will nit repurchase a gun ive already unlocked and complete their tasks again give them back!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!111
for the love of god make the contracts random so if you cant finish one contract you can try to finish the one tomorrow so you wont get stuck with an impossible contract getting you nowhere