I did it!!!
Ok, after like 10-15 runs of the game, I managed to finish it. Unfortunately, I was not able to get all the story letters, because I was too occupied trying to survive haha.
You guys did a very good job, this is definitely the game I played the most (after my own of course).
Edit: Also, very sadistic of you, to put an energy charger right before the end of the game. The last time I played (before finishing it) I died trying to get this one, but I could have just gone for the end
