A: Yes. Most repacks include all 23 Spec Ops missions. However, co-op requires a workaround using Tunngle (deprecated) or Radmin VPN.
While the repackers above are respected, many fake “top” results on YouTube or shady forums contain malware. Look out for these red flags: A: Yes
Here are some top websites that offer Call of Duty Modern Warfare 2 highly compressed for PC download: A: Yes