Finished Level 1,player will get RED_FACE_SPIDER achievement.It is just an honor.
Finished Level 2,player will get YELLOW_FACE_SPIDER achievement and unlock Level 2.
Finished Level 3,player will get BLACK_FACE_SPIDER achievement and unlock Level 3.
Finished Level 4,player will get GREY_FACE_SPIDER achievement and unlock Level 4.
Finished Level 5,player will get GREEN_FACE_SPIDERachievement and unlock Level 5.
Finished Level 6,player will get BLUE_FACE_SPIDER achievement and unlock Level 6 and level bonus.