audit procedures

No - see M/J22 Q1(b) answer for example - it needs to be clear WHY you are performing a procedure - what is its purpose - which might mention "completeness" or "valuation" (for example), but you don't have to relate every action to an assertion.

There is no negative marking in ACCA exams.

Nothing that is validly earned, including professional marks, will be taken away. But if, for example, Q1a said to ignore disclosure risks, a candidate who ignored the instruction will not earn any professional mark for adhering to a specific instruction.