Have you played Hitman BloodMoney or the Hitman 6 beta? Those are both way better than anything Hitman Absolution has to offer. If your brother hasn't played any of those, I really suggest playing those first (Hitman 6 releases on March 11 and the first few Levels cost 15€ if you just want to test it)Hey, I actually feel really bad for asking for more games, but could I grab a Hitman Absolution: Elite key? It's not for me but for my brother.
And if those 2 things are not really something you want I'd suggest Steam Family sharing. You can play games from up to 5 "family members" (I and 4 friends give eachother access).