BKO duck and P+K for crushes. PKK/KK for quick interrupts/pokes. 33P, CH 1PP, BT 66K, BKO 2K, BKO 6P4P/P, 2H+K to start stuns, and everything else to extend them. Helena is pretty much using her plethora of different height punches and kicks to extend stun. OR you can play her by just stunning and going straight to launch into a PFT.
She has launchers from most hit levels. High kick (8K, BKO H+K) Mid Punch (BKO P+K, BT P+K, P+K, BKO 66P) Mid kick (6K, BKO 6K, 9K, BT 4K,). That's pretty much it I think. If you want to know more just PM me. This is pretty basic Helena stuff.