The Corp relies upon money and a supply of new secret cards in order to keep its advantage on the Runner. What if you know the cards it is going to get in advance? And if you disrupt the bank account exhausting its funds? You can also get some profit from that.
A basic Criminals deck is modified in this case to get such results. ACCOUNT SIPHON and FORGED ACTIVATION ORDERS force the Corp to expend valuable resources. Add some DEMOLITION RUN together with a MEDIUM, and the Corp will start to be nervous. Combine/alternate with THE MARKERS EYE to increase the presure. Is the Corp heavily protecting the HQ or R&D? No problem, install a SNEAKDOOR BETA or turn to an INSIDE JOB. And expose its cards with LEMURIA CODECRACKER, avoiding unpleasant surprises.