by Shakhtar » Sat Dec 01, 2018 5:36 pm
I've used to upgrade towers to lvl 4 and go instantly for vital abilities, but now, as I've increased my understanding of the game, I actually plan ahead and often go for a few mid-tier towers instead of upgrading one (like I used to go for instant Rangers with Roots or Tesla with Overcharge in KR).
However, sometimes tier 1 are really bad, and KRO is the best example of that (druids do laughable damage at 1, barracks can't shoot, archers have lower DPS and only 1 targets, low damage mages), and some of the towers (like Melting Furnace in KRV, basically, t1 at KRV sucks too) should be instantly upgraded to level 2 at least. Actually, spamming t2 is often quite good.
There are rare exceptions: for example, in KR mage tower slow for 0,5 down with each shot, in KRF mages deal bonus damage for each tower build, in KRO they teleport back and that can be used at t1 already, so sometimes moderately spamming t1 is a strategy too (assuming you'll planned ahead their positions and how and when you'll upgrade them later).
As for KRV - I do the same. I plan ahead and instantly go for 2-4 lvl 2-3 towers. And THEN I transition to lvl 4 and skills of the most important tower.