SMS Version 2.2

Another small update improving on UI and difficulty. This will probably be the last update until Version 3. 

- The boss's 3x spread shot attack has been widened to make it easier to dodge.

- When the player dies from the boss's mega beam attack, the audio of that attack will play until the game is closed. That does not happen anymore lmao.

- Some UI sound effects have been changed for easier navigation through the game's menus.