Game have a cheat code (just in case anyone need it).
How to Cheat
It’s quite easy. Just hit:
And you will become invincible.
Enter the code again to exit invincible mode.
If you want to turn it off, just enter the code once again (or twice).
Note: You can type those code in anywhere in-game. If you make it right, a skull icon will appear in top right corner.