Link: http://www.kongregate.com/games/fioriBR/mech-defender

This is Unity3D so thanks to Kazuru for this Tutorial. There were just two things different here which are the that the code was in Assembly-UnityScript.dll and when using CE i had to choose Firefox rather then the plugin-container.

There were 3 parts i found were the player gets a certain damage. The AOBs were found twice for me so i changed both to be sure. Should make you invincible.
this.addDano(5);
02 1B 6F C5 00 00 06
02 16 6F C5 00 00 06

this.addDano(20);
02 1F 14 6F C5 00 00 06
02 1F 00 6F C5 00 00 06

this.addDano(50);
02 1F 32 6F C5 00 00 06
02 1F 00 6F C5 00 00 06I am posting this to see if it works for other people as well.

EDIT: OK, found a way to change it with only one AOB.
02 02 7B ?? ?? ?? ?? 03 DA 7D ?? ?? ?? ?? 02 16
00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 16