Looks like I'm doing the newb thing -^
This is the best idea for a game... Ever! It is so wonderful! What an idea! Santa is some homocidal psycho, who is trying to save his elves, and get's help from the P-bot, Alien Hominid, Pico and more! My favorite game by far, I loved the controls, the storyline, the variety, the limited saving (So you don't have to re-unlock characters).
***Spoilers***
I will only tell you how to get a few, for the others are secrets (I will give you the best ones, the others I don't like too much)
P-Bot: At the beginning of the second level... HAUL ASS! Fly, do whatever you can! Just hurry down to the gingerbread man, now, where there is normally a green button, there is a strange face thing. Now, blow up the Ging'man and grab the head. Congrats! You now have P-bot as a playable character.
Stats: Normal Shot: -10
Health Limit: 100
Jump: Super high
Overall: Best character
Pico: At the third level, play as the P-bot, now, when you get down to the three tanks of gas, or whatever, blow 'em up. Now, when they are blown up, jump on the unbroken land, and jump up, there should be a Pico head, grab it. Congrats! You now have Pico as a playable character.
Stats: Normal Shot: -5 - But shoots insanely fast, doesn't have a limit of bullets on the screen at one time.
Health Limit: 55
Jump: Super 'Bout same as Santa
Overall: Fastest shooter, pretty good.
That's all I'm giving, by the way, AH really sucks, I think there's a glitch, he starts out with 15hp whilst he is supposed to have 30.