How can I know the order of excution of Start() and Awake() and other functions on two different scripts and GameObjects?
Also how can i assure that this Awake() starts before any other Awake()?
-You should check the unity manual for the order of execution of different events: Unity - Manual: Order of execution for event functions
-Also, there is a way you can setup which scripts have priority (get called first) than others. This is the manual entry for Script Execution Order Settings: Unity - Manual: Script Execution Order settings
Example:
Suppose you have ScriptA on GameObjectA and ScriptB on GameObjectB, then if you want Awake() to get called first in ScriptA than in ScriptB, you must put ScriptA in the Script Execution Order Settings to have a time that makes the ScriptA to be before of the Default Time band in the seettings window. All scripts are set to be at that default time band, so making ScriptA to be before that default band, will imply that all unity events (update, awake, start, etc…) in ScriptA gets called before than ScriptB unity events, since ScriptB is by default on the default time band.
Note however that if you have ScriptA on GameObject1 and same ScriptA on GameObject2, then the order of execution here is not defined to be first one or the other.
Edit>Project Settings>Script Execution Order