There is a bug that can make you real speedruner and beat game in 4.57.12 seconds
1. run game
2. when you see engine loading refresh window
3. run game and wait the game load
4. click start and spam "R" key
5. if window not respond that means you done everything corectly.
6. refresh window start click run game
7. then click "start" button and beat first enemy
8. then if first enemy get beated you see sumary screen with all enemies defeaded.
Thank you for reading.