Heldric's cloak encompasses his comrades, and they set off under cover of blood magic.
They make it back to trapdoor that'll let Heldric up until the Chantry's basement. Thanking every God that might exist, Heldric finds that the door to the basement has been left open, so he won't have to break his cloak to open it.
Poking his head slowly out from the floor he sees nothing special - looking through the bodies and their gaps he sees the frozen, bloody walls and a small host of inhumanly massive, intimidating, monstrous statues.
Oh wait. Shit.
"I hope for your sake those things can't see you", the archmage's voice sounds in Heldric's head.
8 gargoyles - 9-10 foot tall twisted monstrous creatures carved from stone weighing several tons each, sporting large wings that shouldn't be able to carry them, and large muscles that shouldn't be able to support them.
They stand still as the statues they are, but Heldric has heard tales of the mythical strength and undying loyalty of High clan Tremere's slave bloodline, and dangerous as Andreas is, he doubts the man would be able to defeat 8 himself in single combat. Not without near monstrous speed.
"There's a decent chance they won't see you, but if the apprentice or one of her companions is watching... Be careful here, bloodsucker.
The sandglass you have? Whoever has it can smash it any time against the ground to give themselves a minute of free action, everyone around will be frozen in time. Keep it in hand, and keep in mind you will not be able to save your comrades if you use it to escape."