Jak II Tips

Hidden room
All you need to get there is giant dark Jak(this is your finale dark Jak abillity). Go to the "obstacle" course you must go through to get to the first Baron Praxis boss. Right after you get out of the elevator room turn into giant dark jak and jump. You will be in a unseen room. If you use any other dark jak abillities you will fall out. Also you will go through walls and certain parts of of the floor.