Defend objectives with a fallback
Update 0.4.0.78 says sensors defended for contracts became more durable and that monster damage to those sensors was reworked. The same update changed raid monster spawns based on raid size and variant.
Practical use
Bring a clear defensive plan and an exit condition. Check the current contract briefing for the objective state and do not assume the same pressure applies in every raid variant.
Version note
This independently written guide summarizes current official update information. Check the live game client and official notes before making a high-risk decision, because live-service rules can change.
Independent guide based on supplied research and current official information.