Arrow keys to move, Z to shoot. Everything else will be said in the game. Think of the green flag like the reset button in Undertale, and pressing Q as the true reset button from Undertale. There is an ending. Where you don't die. Find it.
*sighs* Let's get this madness over with. Toby Fox created Undertale. A lot of concepts, characters and sprites in this game come from Undertale. Thank Toby Fox for those. I did a lot of the artwork and coding. the_iron_rampardos remixed one of my 'Agent of X' games (specifically Agent of Flowey) and so any changes made can go to them. I then remixed their remix of my fangame, and so anything in this project that wasn't in theirs goes to me. I have no clue who the 'True Gaster Blaster' sprite belongs to.