This is a really difficult game. The movement is very hard to get used to but the number of lives makes up for my skill issue lol. It is fun but I don't think you are allowed to use the Risk of Rain soundtrack or terraria sound effects in your game (as much as I love these games), even with the credits. The music is copyrighted by the Risk of Rain IP holders and using it without explicit permission or a license is copyright infringement. This is the same thing with the terraria sound effects. Even if your game is tiny or free, itch can still take down your project if someone reports it. And game jams often require that all assets be legally usable. However, there are plenty of free resources out there that you can use with credits: incompetech Music is the website I used for my game. They have a bunch of music that you can use as long as you credit them. For SFX you can also check out: Freesound, Pixabay, or Mixkit. If you can change the music and sfx to something you can use it would be a great game!