If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Strike Force Heroes 2 is the speed up version in which you can enjoy 127 blood. You can upgrade just by reaching level 1 experience.
Level up four unique classes to unlock over 65 weapons, multiple skills, and killstreaks, to customize your loadout. Play the campaign for a fully voiced, action-packed story, or create a custom quickmatch to let off some steam. Try the challenges to truly put your skills to the test.