As you progress through Warcraft Rumble, you might notice a massive upscaling of difficulty that your tiny unleveled mini figures will have no chance of beating.
The difficulty scales up quite a bit, almost as if Blizzard is trying to force players to purchase better units and upgrades in an effort to combat the hardest levels or get an advantage in PVP.
How to level up mini units in Warcraft Rumble
There are various ways to level up minis in Warcraft Rumble, but there’s no surefire way to power level the specific one you want unless RNG is on your side. Some of your options include:
The easiest way to level up your minis comes from just beating chapters. As a chapter is beaten, a unit you use will level up upon success. It isn’t much, but with such a limited way to upgrade units, it’s better than nothing.
In the G.R.I.D. shop, which you unlock a few missions into the tutorial, you will be given the option to buy units using the coins you have collected via the campaign. Sometimes when buying these units, an XP Boost crystal can appear in the store and, if placed next to or in the same row as a unit you plan to buy, it will boost the level of that unit upon purchase.
This method only works to fast-track new units, though, and can’t be used on existing ones.
XP Tomes are a rare item rewarded or bought with coins or real money. These tomes give you the option to choose between one of two random units to dump crystals in to level them up quickly. Each tome gives you three chances to level up random units and are mainly rewarded for every three successive wins in the campaign.
Pay for it
There is no easy way of saying this, but as the game is F2P, there are paid incentives that give you boosts to character and mini leveling if you wish to do so. Such is the nature of F2P games, pay-to-win will always be a major feature to try and squeeze as much cash out of you as possible.