Difficulty
I can tell the guy below me probably grew up with third or fourth gen systems. The difficulty is part of the old platformers that I like. you cant just sit in the corner spawn killing to get all the weapons, and sit at your pc and spend hours fighting the same mob, you actualy had to have an amount of skill that came through practice.
I dont think the difficulty was unreasonable at all, given the length of the game. And I say a job well done on your first game, Miktar.