You have to click the green flag twice. Use the WADS keys to move your character once you press start. you can press the space bar to attack. Defeat the enemies to earn money. use that money to upgrade in the shop. You can upgrade two things. You can upgrade your boot level which is move speed, of you can upgrade sword level. once you max out the upgrades, you can rebirth to restart and unlock new things. The max rebirth is 2. the max boot level is 10 and after 2 rebirths, the max sword level is 16. If it is glitching, press the green flag twice to fix it. If you still see the glitch. let me know in the comments below. If you want to restart, press up, up, down, down, left, right, left, right. You have three seconds to push the keys that pear on the screen. If you do in time, it will reset you. The cat will stay the same though, so just push the green flag twice, and you're good to go. If you have played this game before this second publish, I would recommend restarting. Directions above. It should save your progress. But, I do not know if it will save from device to device.