i am thinking to create a rather simple game because i am new to game development. My idea is to create a platformer game in which you have to escape a place without getting caught by the enemies. To make it interesting   the player can't attack the enemies . Is my idea good. 

please help me

It sounds like an interest idea to me!!

Sounds like a good robber game!

Devtober is all about simplicity, I guess, so go ahead! :) Although I don't think platformers are that easy. But that's just my opinion. ;) Looking forward for your contribution! :)