How to approach it
The night opens at wave 4 with 21 enemies arriving in 4 groups. The first group is 6 raiders coming in on a weaving crossing. There are no armoured hexagons in this wave. 6 raiders cross the screen without joining the formation. Nothing in this wave drops a capsule. On Normal you have three lives and one shield charge.
- Raiders weave across the middle of the screen; shoot them from the side they enter rather than chasing them.
- Stay low and to one side while the groups fly in, then work across the formation from that side.