There seems to be a bug with colored doors in the new Endless mode. Sometimes a door will spawn as the wrong color, leaving you with no way to open it. This has happened to me twice so far on two different levels. In the level shown below, it normally spawns a red key and a red door, but in one case it spawned a red key and a blue door instead. In another level (didn't take a screenshot unfortunately), it spawned two blue doors instead of one blue door and one red door. In both cases I had previously been through the same level shortly beforehand, so that might have something to do with it.

Wrong door spawning:


Correct door spawning (same level):

Occured to me once too.

lol I really start to hate those doors

I've played for DAYS but it never happened to me. So, I apologize that I overlooked this bug. I will look into this and release a patch 1.11 or something as soon as I have found a really good fix for this. Thanks for reporting!

I've attempted to fix this issue. Please report again in this topic if you find the issue in version 1.11 again.
Thanks for the reports! Bugs like this are almost impossible for me to figure out on my own sometimes.

Unfortunatelly I've got the same bug even in version v1.11, in Hell City level on Random Mission.

EDIT: To do not make a separate topic for my opinions about a game - thank you very much for GG2. I've beaten this game several times - twice in normal mode, in hard and Iron Maiden, and in Endless Mode I've got all Power-ups and max stats, in Iron Maiden difficulty too. I'm still not bored with it Perhaps I should beat prequels now? (I mean, I played Gundude and Gungirl much earlier than their sequel, but I haven't beaten it)