Complex sentence: With assistance from his CIA colleagues and a reluctant Stuart, Bryan gains entry to Molankov's heavily guarded suite, but after dispatching the guards and mortally wounding Molankov he learns that Stuart had played both men against each other.
Split into simpler sentences: With assistance from his CIA colleagues and a reluctant Stuart, Bryan gains entry to Molankov's heavily-guarded suite. After dispatching the guards and mortally wounding Molankov, Bryan learns that Stuart had played both men against each other.