Hi, as the title says, I am fighting Conrad, the big armoured guy towards the end of chapter 2. After reaching him I managed to shoot his armour off several times until he only had the helment. Then, he killed me. I clicked continue and the game starts from when he has his full armour on, but he doesn't attack me or move.

If I shoot him, a bit of dialog triggers, but nothing will make him move or attack. Can anyone help?