Improved the scenario setup with more options for terrain generation: Allow tweaking the density of forests and add rivers, lakes and terrain elevation around these water bodies, including effects on units battling on higher ground.

Improved the barbarian units AI so that instead of just chasing the closest enemy, it will prefer to only do it if there are enough barbarians together, so it may stop to group and then charge.

Improved Centurions, they now have higher health and run away when their Virtus is running low, units make way for it to move, and is also has a higher inspiration range when in combat.