How to beat the final boss: First take out the guards, Its very important to take out all of them, otherwise it will be very hard to survive. When you have killed all the guards jump (On the place your standing) the robot will change direction to up, run under the robot while the saw is pointing up as fast as you can. Start shooting it from under. The robot will start to move when your under it. If the saw goes right, you just run to the left side (You dont have to be under it now) the saw will change direction. Run to the right while it is changing direction, fast. Just keep doing this until the boss is dead. Im sorry if you dont understand, english is my second language :/