Related Clues:

• Crucial
• Critical
• All-out
• Desperate
• Requiring heroics
• Eleventh-hour
• Indomitable
• Like a Hail Mary pass
• Desperate, as a situation
• Go for broke at the casino
• Doggedly determined
• Like a desperate effort
• Determined to succeed at all costs
• Like a dire situation
• Recklessly determined