It must have seemed like hours, but in reality, it was probably only 15 minutes maximum when Rufus fully woke up, with brain largely restored to the way it was before Marcus messed him up. He started to remember things, lots of things. Thoughts and memories crowded his brain and he had to shake his head to unscramble them.
1. He owed his life to the machine he clasped.
2. An evil old man tried to kill him and must be dealt with.
3. He was going to university.
...but first he planned to graduate as a first class killer.