In HD2 'OP.LIBERATOR' (rescue Trebissky) One person don't stand any chance! I just tried it three times and given up. It takes so much time to sneak around getting on top of the enemy, time just keeps maxing out and the enemy kill poor Trebissky off before I get chance to liberate him. I was just outside the door the last time!
It can be done with stealthy stuff, you just need to do it rather fast. One way is to cut the railfence from right at the beginning of the mission, use the forest to move around, sneak past some patrols using the grass as cover and then using the pipe of the building to climb up (reguires bit practising to get your guy to climb the pipe).
After you get up just quickly get inside the house from a window and lie down so none of the guards can see you.
After just go in and shoot everyone (with silenced weapon) in the room and then go to Trebissky.
After that.... well it´s up to you how to exit the area. I have once managed to complete the mission on hard that no enemy saw me long enough to grab their guns and try to raise the alarm.
The other one is OP.HEAT (Mouse in the House).... Another immpossability on one's own...the enemy is all over the place! No chance of getting to the target unless one flies!
This is the mission where you need to rescue the prisoners?
There is actually one jeep avaible at the starting point so if you want to do it "the easy way", just drive jeep in good position where they can´t flank you, man the MG and start raising hell out.
About the mission being impossible to complete alone, well I disagree. It´s tough but not impossible. You just really need to calculate everything you do and sometimes even take some risks around to complete it. I would recommend going in from the left at first.
One funny note, you don´t always need to kill people to get past them. I once completed one mission in H&D2 with less than 12 kills and I believe it was the first mission of Sabre Squadron (sabotaging the submarines)
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