IDF-ASD

IDF-ASD is a one- or two-player top-down shooter in which both players share the same screen. You pilot ships through intense bullet-hell missions, upgrade their capabilities and take on increasingly difficult challenges.

Ships and upgrades

There are 10 ships. At the start of a new game, you can choose from the first four; the other nine can be rescued during missions. Ship 1 can be rescued in mission 1, ship 2 in mission 2, and so on. Eleven researchers can also be rescued, unlocking research upgrades that apply across all ships, including speed, firepower, fire rate, missiles and bombs.

Missions

Progress through the missions in order: beating mission 1 unlocks mission 2, and so on. The later missions are designed to be nearly impossible without upgrading your ships’ capabilities. Three secret missions also require specific conditions to be met, such as completing mission 5 without taking red-health damage.