You can use slime tether. Tether the green mask first, then wait for a cherub to swoop down to you and dodge, then tether him. You need to wait for them to swoop, otherwise they wont hit the gate because of how high they are. It does take a bit getting used to. Also no matter what, you need to keep ray alive so he can revive you. It is tough but hopefully with this strategy you will suceed. Good luck hope this helps.
