Heli (Enemy)

Heli (Enemy)
Description	Moves by air, beyond the reach of many towers.
First appears in level	2.2

Heli is an enemy type in Infinitode 2, posing as an enemy that flies through the air and can only be damaged or targeted by a few towers.

Strategy

A wave of Helis can be one of the most difficult threats in the game due to the enemy's general gimmick of requiring specialized towers to be purchased or with an ability which enables attacking air enemies.

The primary counter to flying enemies is Antiair, which has the highest single-target damage against Helis and cheap cost. While it takes up space without contributing to the rest of the fight, it inflicts a burn, which deals damage over time and slows Helis by 40%.

Freezing, Splash, Multishot, Minigun, Tesla and Laser can also target Helis, but all are quite costly. Regardless, they trade off cost for a more active role in general gameplay, as well as having better potential damage or even area of effect. Missile also has an ability enabling it to target Helis, alongside a 50% damage bonus (after 1.9.0), which can be considered if few other options to counter Helis are available.

This still leaves 50% of towers unable to deal with Helis, and fewer still that do not suffer damage penalties. As such, comprising a defense with at least one Tesla or Minigun can easily take out early waves of Helis, even when not upgraded and placed effectively.

Tower Effectiveness

Tower	Damage
Basic	0%
Sniper	0%
Cannon	0%
Freezing	100%
Antiair	150%
Splash	50%
Blast	0%
Multishot	100%
Minigun	100%
Venom	0%
Tesla	50%
Missile	150%
Flamethrower	0%
Laser	100%
Gauss	0%
Crusher	0%

ADVINAS Introduction (2.2)

ADVINAS: On this level you'll meet flying [Heli] enemies: they can't be hit with towers you own so far.
ADVINAS: To deal with them, use your new Antiair tower, but remember that it can't reach other types of enemies.
ADVINAS: Flying enemies usually don't appear in the first waves, so you'll have some time to build defense against other enemy types
ADVINAS: Also remember that you can use the Portal's menu to see when particular types of enemies will appear.

Trivia

• Heli and Armored are the only two enemies ADVINAS mentions.
  • However, this is only because a new tower is introduced on the same level.
    • Interestingly, Fast does not get the same treatment despite being introduced the same level as Freezing.