good game only thins i would recommended is the zombies dont have quit as much hp and boss zombies at the end of each complex area b4 you go to the new location(like a strong zombie that follows you but gets stunned 4 a while
for the squral part you need you need to put the rock from the farthest left area and place it in the farthest left hole then have reemeus pull the branch in the left area swich to liam and grab the nut have remmeus postioned at the left hole in the tree and liam put the nut on the pedisole to the right then have remm and liam meet in the right area