The Frostbite Tower

The frostbite tower is used in first place to slow down enemy creepwaves.
By default, the tower slows down enemy movement speed by 50%.
Upgrading the tower increases the towers attack range as well as health a little.
Also it secretly increases the slow effect (by Defense Power) and decreases the
channel time between its attacks (by Defense Speed).
Slowed enemys are not only less dangerous for the players defense structures,
but also the time defenses can deal damage to them increases.
Secondary (with spheres and /or special items) that tower can be upgraded to also
fully CC single enemies and / or increase the damage that defenses inside the
chill radius deal to chilled targets.

Ingame Description

Tactic
The tactic is actualy very simple: disable the creepwaves with frosty at maxrange on top of traps (or in defensetower range) and see them melting.

Tower Stats

Tower Health (pushed by Defense Health)
Tier1 10x DH | Tier2 12,5x DH | Tier3 15x DH | Tier4 17,5x DH | Tier5 20x DH

Attack Range
Tier1 30 | Tier2 31,49 | Tier3 33 | Tier4 34,5 | Tier5 36

2.1 Spheres

The right sphere-setup is very important!

There are 3 different types of spheres that can increase its range:
(effect stacks up)

Range Spheres

Tower Range
The gif shows the difference between base tower range and improved range with all spheres.

optional:
Since the (S) Frostbite Ranged Sphere I gives only 2% bonus,
it is also possible to sacrefice the in total 4% range and add a (S) Defense Power Sphere V
as well as a (S) Defense Speed Sphere V instead.

The DP sphere increases the effect of Frosty Power(explained in next chapter),
the DS sphere decreases the cooldown time between frostys attacks.

By reaching character lvl40 the large sphere slot unlocks.
Place a Freeze Sphere I into it:

Freeze Sphere I

2.2 Stats

At the current max lvl 50 each hero has 380 status points free to spend.
Put 50 points into Defense Range (DR), 200 into Defense Power (DP)
and 100 into Defence Speed (DS). There are now 30 points left that
be spend however you like.

3.1 Weapon

The best weapon for a frosty apprentice is the chilling touch legendary.
It can drop randomly in every map and comes with the Frost Fire ability.
Its effect is simular to frosty power but with tower attackspeed instead of damage.
The highest possible FF bonus for Defense Speed is 100.

Chilling Touch

Best place to farm it is in any endgame mode.

3.2 Itemabilitys

Important random item abilitys are:

Snowstorm
Can be on weapons and on trinkets.
From what i have seen so far the highest possible is 20%,
the worst ive found ingame so far was 8%.
The possible max percent is also linked to the itemquality.
Snowstorm can also appear on the chilling touch weapon (thats a perfect combination).
With a perfect 20% weapon and trinket, the base tower slow of 50% increases up by another 40%.

Frosty Power
Can be on all items but weapons.
The highest possible here is 10%, the worst ive found ingame so far was 5%.
The possible max % is also again linked to the itemquality.
To max the effect of frosty power put ur full focus on items with +DP (defense power) as mainstat.

With some combinations of heroabilitys or towers it is possible to instant kill enemies.
Basicly there is a way to instant kill every enemy in this game (but not bosses).
Here is a list of combos:

Frozen Creeps (Frostbite Tower + Freeze Sphere1) + Huntress Geyser Trap:
If frozen creeps are thrown up into air by geyser trap they die instantly.

Frozen Creeps (Frostbite Tower + Freeze Sphere1) + Squire Seismic Slam:

Frozen Creeps (Frostbite Tower + Freeze Sphere1) + Monk Chi Blast

Frozen Creeps (Frostbite Tower + Freeze Sphere1) + Monk Pole Smash

Frostbite Tower + Freeze Sphere1 effect on flying enemies:
Wyverns and Kobolds that become frozen during flight die instantly.

Pushing frozen enemys from a higher ground level to a lower one also
kills them no matter how deep they fall.