The beginning is the hardest. You need to focus on collecting wood and stone, which you can sell quickly. Remember to train your army as soon as possible. The moat in front of the iron deposit can be removed with a demolition tool.
A nice and easygoing scenario, plenty space to chop wood or establish a decent food production; I managed to eradicate the lions at first, then concentrated on collecting pitch and iron by g consistently recruiting a huge army of archers and crossbowmen; never had any problems to repel the enemy's onslaughts that might be slightly bigger. Towards the end I created a bunch of priests and boosted my ale consumption for a victorious finishing.
All in all, well done!