The cherub place on professional is downright retarded. The arrows are one shot kills + splash damage, meaning when Ray comes to save your ass he gets taken out because they never stop shooting your dead body. WHEEE!!
AND THEN there are the little tombstone things fucking with Ray, was that really necessary at that point?
Also - the fence is invulnerable, it's the brickwork around it you're trying to fuck with (despite the skulls turning off one by one). I think it takes 6 angels total into the bricks above the fence before it goes down.
Slime tethering takes two aimed shots while you can quickly grab and smash the angels that always hover above the gate (your beam really just has to be in their vicinity for the grab to work) rapid fire like. Proton stream wins.
Now, someone help me get these retarded online achievements so I can be done. Everyone I play with has been an utter moron, failing to recognize the game types and just fighting ghosts blindly even in relic or thief mode. Fucking idiots.

