I ve played it and got all the 3 main endings.
Undertale door slide.
Go to hotland and into the lab door slide undyne s letter under and complete the date with alphys.
We re an unofficial community of fans and a showcase for undertale fanwork.
Turn on the generator to trigger a conversation with alphys.
Unfortunately undyne didn t sign it so alphys will think this declaration of love is from you and the two of you will go on a date.
All you can do is slide the letter under the door.
Not the only solution but just one that works.
The name of the game is undertale.
Come join the fun.
Solution to the puzzle after the save point with the doghouse and the puppydog building the snow dog.
Undertale is about a child who falls into an underworld filled with monsters.
Find the 4 keys scattered through the true lab to open the power room door.
Will drop you into another room continue through the door to the right to reappear on the other side of the dark patch in the previous room.