How many Praxis points can I earn in a single playthrough?

Question

I'm interested in maxing out Jensen in a run-through of Deus Ex: Human Revolution by unlocking all of his abilities. As a result, I need to know how many Praxis points it is possible to earn in a single playthrough?

To accomplish this, I assume you would need to do mercy kills on every single enemy possible while still not being detected for Ghost and Smooth Operator, explore every single hidden area for the XP bonuses, and find all of the hidden Praxis kits.

Answer

According to the Deus Ex Wiki, you can get 22 praxis kits, including the LIMB clinics, without considering experience:

• Three in Detroit at any time
• Two on your first Detroit trip
• Four on your second Detroit trip
• Two in Heng Sha on any trip
• Five in Heng Sha on your first trip
• Three in Heng Sha on your second trip
• One in Montreal
• Two in Panchaea

The game is new, so there may be more that are undiscovered by Deus Ex Wiki authors.

You can spend up to 68 points before running out of things to spend them on, I think, so you need to get around 230k XP in order to max your character out, assuming you don't miss any Praxis kits on the way. (This was not completely consistent with my playthrough XP count, so either I missed a Praxis kit on the way or you can spend 69 points on augmentations.)

My play style is to try for max XP whenever possible, by hacking all terminals for all datastores, and going for stealth nonlethal takedowns with every guard with nobody ever seeing me or the body. I didn't succeed at Ghost in all the early missions, though, which lost me a decent chunk of XP and probably one Praxis point.

FINAL EDIT: I finished the game with 202,340 XP, and having gotten all Praxis kits that I knew of. I needed seven more Praxis points to completely max out augmentations. I imagine someone could easily (relatively speaking) get every Ghost bonus and knock out every guard in a second playthrough, with the knowledge gained from the first, and probably get one more point.

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