SO here's the academycraft breakdown:

Electromaster:
A ranged attack that kills regulars in about two hits, a better version of that same attack, a super powerful long range attack that's currently broken, the ability to use grappling hooks, a random buff/two random buffs on command, ability to black your screen and see good ores nearby, the ability to aim and shoot lightning strikes, and the ability to charge electrical machines from academycraft which can then become rf.


Teleporter:
Ranged attack using an item, ranged attack that just kills things, teleport where looking, teleport through things, teleport to waypoints, teleport a block to where you're looking at range which hurts anything in the path, and an AWESOME movement technique that blinks you in any direction based on your current locations and where you're looking. Assuming there's no lack of boost from the bonuses you get as you progress due to just being gamemode 1, you can only use it twice before overloading but it doesn't drain much of your ability usage for both. It slows your fall after each one for a second or two so if used well you can do awesome shit.



Meltdowner:
Useless. It has a ranged attack, a version of that attack that shoots multiple beams, a version of the attack that uses multiple beams and auto aims at nearby enemies but only lasts for about three shots and drains all your ability usage, three ranged pickaxes that don't auto pick up the items meaning they're useless, one regular one faster one fortune, a ranged attack that needs an item thrown into the world that lasts 2 seconds before breaking that if you hit it before it breaks it causes a ranged attack in every direction, and a super ranged attack that auto kills regular enemies and destroys blocks.