Breakthrough
Neutral, success
Cut your losses
Neutral, failure
Miss the boat
Informal, failure
Go to pieces
Informal, failure
Rest on your laurels
Neutral, failure
On the rocks
Informal, failure
Sail through
Informal, success
Go under
Neutral, failure
Buoyant
Neutral, success
Take off
Neutral, success
Bomb
Informal, failure
Come unstuck
Informal, failure
Flop
Informal, failure
Blow it
Informal, failure
Go down a storm
Informal, success
Out of your depth
Neutral, failure
Flunk
Informal, failure