v4.00 update

(한국어 패치노트는 게임 폴더 안에 동봉되어 있습니다)

- New 2 enemies added: 'Chasing Circle', 'Sniper Circle'

- 'Spear Square' makes a noise right before it charges (No noise on higher difficulty)

- Achievements were added! (20 Normal achievements, 5 secret achievements)

- Get a secret feature when you complete all normal achievements

- Get more secret features when you achieve some secret achievements(3 in total; receives in twice)

- 'Pause' item is now working more properly

- Obtaining bonus point reduces by 0.8x when 'Pause' item is activated

- The bonus point penalty of 'Shield' and 'Pause' does not overlap; only one in 'Shield' will activate

- The shield flickers when its duration becomes very low

- 10 seconds countdown alert became louder

- Life up sound became louder

- The priority of 'game over words' was changed

- Fixed an issue that survived time was shown incorrectly in Records (No changes on real records)

- You can change the window size with F10