I am Wiz3Cryo3Runecaster1thauma1
For my experience i can tell you:
Wiz3 helps a lot with leveling with magic missiles at most stages of the game, so everything is good.
With Cryo 3 you can deal some nice damage with Snow rolling, and ice pikes are also strong if you cast them from a good angle, since multiple pikes can hit 1 target.
Leveling it solo, it’s kind of painful once you get 100k mobs. You either Rune of Destruction or Rune of Ice + Snow rolling to kill mobs.
Getting to rank 8 implied dedication, but thanks to the CC of cryo it wasn’t THAT hard.
Killing high hp mobs will mostly always require you to use Ice wall o kill them at a good pace, or else you will always take like 40 seconds to kill them (in groups).
Unluckily Ice mages aren’t very offensive in this game, you need to invest a lot of money in attributes and upgrading gear.
And having said this, i found playing wiz3cryo3 fun. It’s all about timng CC, you can make enemies perma cc with sleep and freeze rotations. It consumes a lot of SP since you use a lot of low dmg spells.
If you really feel like playing it you should try. If you simply want to take cryo1 and not invest til cryo3 you could get kino, warlock, rune caster, and many other classes which have more damage.
The build i like the most for some cryo solo play action is:
Wiz3cryo1kino1runecaster1warlock2
It gives the icewall + pp burst, aoe damage with rune of destruction, some extra damage on ice pikes and ice bolts (i have dealt 70k per icepike cast on bosses at lvl 280) Nice single and AoE with Warlock, and some good utility from kino too.
PD: to whoever wonders “who the hell goes wiz3cryo3rc1thauma1”.
I must say I am a Railgun memer (Ice wall + Energy Blast). My build is focussed around max damage for that combo.