I tried playing this a while back, but it was too buggy for me, so I didn't get anywhere with it.
I can't remember the exact problems I had now, but they were bad enough that I decided not to bother with it at the time.
Desperados: Dead or Alive is great. I bounced off Cooper's Revenge hard. It tried to do the 3D thing and failed at it, and also seemed to have a lot less charm than the first game. The voice actors didn't reprise their roles, and the new Doc especially just sounded really Wrong.
I think Commandos has a similar problem. The first game + expansion was great, the second was okay but lacked a bit of the charm, and the third also tried to do the 3D thing, badly, and just didn't click with me (so I never finished it.)
The modern tactical-stealth games from Mimimi are great. Desperados 3 and Shadow Tactics. Strong recommendation for both.
They manage the switch to 3D and do it well, taking what was great about the old games and innovating on them.
I recently played the new standalone DLC for Shadow Tactics, Aiko's Choice, and it was nice to get back into that world for a few extra levels, even if the DLC was sadly fairly short.