I'm in love with this game. RoboCop is probably the best software Glu has put out yet, and I play Contract Killer 2 quite frequently.
However, it's early days and there's bound to be some bugs and hiccups.
Here are a few I've noticed:
The cloud saving prompt saying "there is a conflict between cloud and local data" will continuously pop up every minute or two, regardless of choosing local or cloud. The XP and score shown for both, in my case are identical, so it is frustrating to have to keep choosing and moreso when it occurs during gameplay.
That's really the main bug I've found annoying. Performance could use a boost, I'm on an HTC One, which has a quad core and 2 GB of RAM, so smooth framerates in gameplay and menus is a reasonable expectation, especially considering the game's 90MB file size.
One final suggestion: the ability to switch between the "classic" RoboCop skin and the new "black armored" version, when unlocked.
Hopefully, others will use this thread to post their own responses/reports for bugs, performance across various devices, or suggestions.