Here's some help on getting the 2 special endings. The other 2 aren't hard. To get the good one (you guys kiss and have a relationship with a 6 months down the road flashforward), basically use common sense. Don't make fun of her weight, inquire about her, don't pull down her pants, ect. To get the bad one (nothing happens ending), do all the stupid things, like asking if her roommate is hot and make fun of her tripping. She even told me not to do anything funny
It was fun trying to get people killed. Here's a hint for those who want to get one of you killed.
Miko automatically eats an apple after she reaches a certain low level, I think it's below 20. Which means it looks like she can't die. However, team attacks forces Miko to not eat an apple! Therefore, attack normally, and make sure not to kill either shroom. Eat an apple if they beat on you too much (but you shouldn't have to hopefully). Personally, I'd beat on A, and if Miko beats on A too, switch to B. And so on. Once Miko hits 20 do nothing but team attacks. Once Miko dies, finish off the shrooms eating apples as you need to.
Basically.... let your self get hit a lot:p You wanna make sure the shrooms don't die, so hit A, and if Miko hits A, hit B, and if miko hits B, then hit A again. Otherwise, if she hits the other shroom, keep hitting the same shroom. Eventually hopefully you'll die. If not, restart:p
I had to restart quite a bit actually to get them killed. Its amazing hard to lose to the shrooms