Zombies and Sacrifices

The zombies and zombie infected spikes are trapping you in the castle! There is no way you and your team can all escape, so you must make sacrifices. Can you escape and get to the top-left rectangle outside the castle to win? Or will you and your friends die there alone. 

Controls: 

Movement: WASD
Sacrifices: Arrow keys
Necromancy: IJKL
Restart:Space

Open doors by touching the red switches or by crashing into them, depending on whether they are locked. Most doors are locked.