I should have listened to my gut. I had a feeling that cutting through that wrecked building was a bad idea.
I like the game very well. I like the sniper role best. I shoot and move, shoot and move, and don't give them the chance to home in on me. That works pretty well in-game.
I should try Sniper Elite or Ghost Warrior. I like sniping in ArmA 2 and 3, too.
Next time, I'll listen to my gut when it warns me against a shortcut in Easy Red 2.