Serum 2 has basically four oscillators, one sub, three wavetables, and one noise, so you can create the punch in the first, then the tail or crunch in the second or third. You can route two oscillators to two separate buses and treat them separately. Then you can route both buses through the main again for even more processing, or send the first or second bus to direct out, or both buses and if you want you can load a 909 sample into one of the oscillators.
That's why Serum 2 is so powerful.