1 - How to enable an augmentation (or upgrade) by default in Deus Ex Human Revolution (Note : This works AFTER the prologue, when Jensen comes back as an augmented individual after his 6 montsh hiatus :
2 - How to disable an augmentation/upgrade by default (You ever wanted to disable the radar because it makes the game too easy ? Here is how to disable it and make it possible to enable it later - if you want - by using praxis kits. Also, the method works with all other augmentations and upgrades.
3 - How to change the strenght of the dermal armor augmentation (Showcase + explanation at the end):
NB : The Values located in the upgrades paragraphes (shown in "3 -) can be used to set how strong the level 1 and level 2 upgrades are. This can be used to make the player sprint longer :
And it can even be used completly disable the energy use by the takedowns melee attacks :
... or even better : Customize their energy use by changing how Jensen's energy cells work :