So after multiple battles i have noticed something weird. AI units wont receive status effects damage before they move as player units. So bike with 1 hp with burning DoT for example will move 2 tiles,attack and only then explode from DoT. Same with surface area damage, unit with 1-2 hp can safely move through damaging terrain and be ok. Player unit will explode if crossing dangerous fire/poison/arc tile immediately. If this is by design it is VERY immersion breaking. All this observed vs random monster groups on the map.