“Miss the boat”

“A game changer”

Something that significantly changes a situation.

“No strings attached”

Without special conditions or obligations.

“A golden opportunity”

A very good chance to do something valuable.

“A close shave”

A situation where danger or failure was narrowly avoided.

“A fighting chance”

A reasonable possibility of success.

“Nothing to write home about”

Not special or impressive.

“Nail down”

To finalize or clearly define something.

“Move mountains”

To do something extremely difficult.