Loved it!
Oh yeah for all you whiners who proclaim its "too hard" here are a couple of strategies.
1. The Car: Ok...guys this thing isnt so bad. Just jump over it, (not on top) and use your special instant kill.
2. The Bear: Now the bear I can understand. Just fill up your special bar right before you face him and open with a special. When he roars hes gonna fire his beam of death, so duck! Not jump, Duck.When he fires his beam you can empty a couple of rounds on him.When he rushes you, jump over him, but not too steep of a jump or you might jump into him. After charging up 1 special, just use d for a single straight beam and shoot more if needed.
3. Helicopter: The helicopter isnt so bad since it does the same thing over and over.
a. shoots a couple of missiles at you so stay to the far left.
b. enters in the left side of the screen or right and after a sec shoots a beam. Just follow him aiming up so you can run and shoot at him at the same time.
c. summons underlings. simply fire a tornado special.
4. The robot thing: Ok...its not that intimidating. Stay under its chin and shoot it. I realized there are two things to beat him with. when his fist goes down, jump on it and shoot him from there. I don't sugggest it really.
Instead stay under his chin and when he charges up his cheap attack wait 1 second and fire a thunder special ( up and d ) You are then invernerable and do some extra damage.
Hope this helps!