A ranger isn't for sure too difficult to play after having your Battle Tower.
I play like a ranger on "high difficulty" and no problems with it
Explosive Arrows is great skill! Maybe a little bit overpowered, like Firewall & Magic Blast are too, but great

BUT: I play never a pure ranger/mage/warrior in a game, but I combined always skills from different types (my favorites are: all passive skills I like: Ranger Stealth, Bleed, Lockpick, Weapon Expertise-skills, Potion & Mana Efficiency, etc ... and active skills like: Magic Blast, Explosive Arrows, Firewall, Fireball & Poison Arrows (in the beginning), Wirlwind,...
Summon Demon & Stun Arrows & Battle Rage & Mindread(all 1 point from gear)!
Now I'm level 25, having my Battle Tower when I was level 21 and give almost all my money on upgrading my runners

and planning to do NO "Unlearning all Skills"-mouvement ... and see this is possible to survive to the final end!
