It was a learning experience, with only one previous game vs armour, I found defending - especially in a mobile battle tough. The Czech 38t is my nemesis! (On a side note I've ordered two boxes from PSC!) The difficulty with this list against the 38t is that I have units which can hurt them - panhards/lafflys and units which can take a hit from them - hotchkiss, not one which can do both. Combating them was also problematic for the hotchkiss, with the 38t having a longer range - and my one man turret getting to shoot at them effectively was tough.
The other problem was against infantry - with lots of no HE I needed to assault to clear people off objectives, and with lots of HMG's the recce Hotchkiss were not relied upon.
Thankfully I only faced barbed wire in one mission, but in my practice games it was noticeable how tough that made things for me.