Fun, just a few points of feedback:
- There's a bug with the cleric cars. Usually, they appear to predict the future location of enemies in order to fire in the right position. If an enemy's path is obstructed (by the final gateway, for example), the cleric cars will predict the future position as if there is no obstruction and miss. This can result in unkillable enemies (if your train has only cleric cars for example)
- It would be nice to be able to repair defenses using excess gold
- If two enemy waves come from two directions at the same time, it is often impossible to defend both.