I think 1.18 is bugged. There is no limit of heroes of the same type even If i choose it to have only one hero of each type in the Melee Game actions. And for some others reason the Ghoul's HP is 340 in the editor (like in patch 1.1 but 330 in-game. -_-
Do all the trees need to be destructables? If not, I believe every tileset has an indestrutable tree wall doodad that counts as a normal doodad. -VGsatomi