Bermuda Triangle (itch)

Welcome to drain 6b in the Bermuda Triangle.
This is your first day as the new manager and our expectations
are high.

To ensure a stable supply of cooling water to the reactor core inside the hollow Earth,
the location of the drain must be kept secret and this is why we built
a base that gets rid of passing ships before they can leak
any information about the drain.

This is done by pulling them into the surrounding vortex, which
will do the rest. The ships come in waves. If you
manage to take care of five waves and nobody escapes, we will
consider you worthy for this position and you'll get the rank of
Lizard General. If you fail, we'll have to get rid of you.

It is of uttermost importance to jam all signals of passing ships,
so you will have to build a Jammer. This should be your first action.
Keep it up to date, or you will fail!
Then build defenses to pull the ships into the vortex.

We're counting on you.

Longe live the Order!
Donald Dumb

EDIT: The Jammer must be upgraded before every new wave (Jammer lvl 2 for wave 2 and so on), make sure to do that, otherwise you will lose. (Didn’t seem to be clear from the tutorial)