What should 1 achieve financially in their 30s? e.g how much in investments, savings, CPF etc

Do what you can do

What's more important than financial benchmarking is setting SMART goals as part of financial planning (eg. $amount in year for length of retirement).
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Also, how much you need will depend on how much it takes to fund your lifestyle. Take a closer look at your spending/budgeting habits to make your financial benchmarking or goal setting easier!

The standard 100K by 30 Everything included except CPF.

But everyone live different (house, partner, etc), so dont be too hard on yourself

Personally, I think benchmarking is healthy only when it's done to ensure you live comfortably and have achieved your goals