I'm really curious how this will play out.
Especially since it seemed like a) he must have been recently injured because Eva didn't know about it, but b) he couldn't have been recently injured because he seemed able-bodied enough, does this mean c) he was injured a long time ago and is addicted to the meds? But if so, why did he clearly state he'd rather be dead. OR d) he had a flash of pain at the end and really was recently injured and we just didn't see any of the impacts until the end, OR e) he had a flash craving/need to take the pills due to addiction.
Certainly wasn't clear, and I like the fact the designer can go any way with it - addiction or injury - both could be equally devastating or problematic in future instalments.