yo dude nice vid! the angels attacking you all at the same time is a bug. With this update pve got messed up and they dont wait their turn anymore, usually they would wait and then attack you once at time, but now its like that till the next update.
33:22 ur not getting health packs bc the wave, every 5 waves i think will have an type of event, when u see something about, hollow...Empty, like that, u will not get healthpack