Unlocking the Professor
You can unlock the Professor from any level that has 6 or more enemies. All you need to do is survive 6 turns with that many enemies and do not kill any of them.
Using teleport is a good strategy for this unlock.
To help you now, the new description should read:
- Prof. Choudhary looks for the unexpected.
- Play a level with 6 or more Vactics and don’t destroy any of them for 6 turns.
I hope this helps!