So something that I'm noticing but I'm not sure if it's bugs per se, is the maintaining/adjusting waves seems optional. I've yet to make it to the end, due to skill issue, but it seems that you can progress the game without needing to make adjustments to the alpha, beta, etc waves. I'm sure that the ending will vary based on if you do as the client asks or not, but just wanted to point out that it doesn't seem to effect my progress from what I can tell so far. (Maybe it effects the end and I'm just unfortunate to not have made it yet)
On that note, how many endings are there currently?