Protect Area 51 from Attackers
Onslaught 2 is a tower defence game where enemy forces try to enter Area 51. The attackers follow a route across the map, and you build weapons beside that path. Every enemy that reaches the protected area creates trouble. Your defences need to destroy the full wave before the attackers reach their destination.
Defeated enemies give you cash. Each new wave brings tougher attackers, so the money needs to go back into the defence. You can build more turrets or improve the ones already placed. Available upgrades affect damage, range, firing speed, and special powers.
Learn What Each Turret Does
The four basic turret colours have different strengths. Red turrets offer strong damage, long range, and fast firing, but their upgrades cost more. Green laser turrets give balanced performance and cheaper improvements. Nearby green weapons can also link their beams and gain more power.
Blue turrets deal good damage at a shorter range. Heavy upgrades can make them enter a brief burst where they fire much faster. Yellow turrets begin with weak range and slow attacks, but their poison slows enemies. Stronger yellow upgrades make that effect last longer.
A good defence uses the map instead of placing every weapon in one random group. Long-range towers can cover wider sections. Short-range weapons work better near corners or narrow paths where enemies remain inside their reach for longer.
Create Powerful Combination Attacks
The combination system gives Onslaught 2 much of its depth. Certain fully upgraded turrets create a special weapon when you place them close together. Every turret in the group needs maximum damage, and the weapons must sit less than one turret-width apart.
The first turret to spot and attack an enemy decides which combination activates. Changing turret range can control which weapon fires first. Possible attacks include laser rockets, poison gas rockets, land mines, cluster bombs, shockwaves, and a black hole.
This system makes placement important from the start. A turret placed alone may help with early waves, yet it might not fit a useful group later. Leaving enough building space can make advanced combinations easier to create.
Upgrade Without Leaving Weak Areas
Onslaught 2 contains 16 weapons, including basic guns, special weapons, and support turrets. Extra choices unlock as you continue playing. The game also provides several maps and different upgrade routes.
Spending all available money on one powerful turret can leave another part of the route open. Building too many weak weapons can also fail against tougher waves. Players need to balance wider coverage with stronger upgrades.
Onslaught 2 rewards planning before the enemies arrive. The basic idea stays easy to follow, but turret links and combination attacks create many possible defence plans.