Mike said:1) Make sure you've collected all your reward food from the surface before you start
2) Upgrading ants helps a lot - level 3 ants are significantly stronger than level 1
3) Play 1.1 and 1.2 on challenge mode - this will give you extra Royal Jelly, food and territory which will help a lot
4) It might be worth looking at some of the videos on Youtube for tips, there are lots!