Forced buyout, what should I do?

So, the CEO of a company I worked for wants to buyout all ex-employees. I kinda wrote this company off, but today I got a surprising phone call. A lowball offer was forced upon me. I'm still waiting for all the documents, but from the phone call I somehow got the feeling that I don't have much of a choice here. Here is some more background info, since it is not a US-based company:

- Company based in the Netherlands

- Equity for employees is in a pool called STAK with a vesting scheme.

- Last year the company had another funding round. (Rather dissapointing from what I heard, and only one investor)

I have doubts about the current valuation and offer of the company. I also have my doubts on the forced buyout. What would be a wise course of action? I can lawyer up, but maybe that is just a waste of money?