Miner

How to unlock: The Miner's drop-pod is found in the Magma Caverns, Stage 4. It has a chance to spawn at the right of the map, at the end of a lava tunnel. After reaching his area, a miniboss Elder Lemurian (called Dire Seeker) will spawn. Defeating the Lemurian will unlock the Miner.

The Miner has short range but many dashes. In order to survive, you will have to balance both dashes and your extra jump to avoid enemy fire. Remember that Crush does a lot of damage!

In the ending cutscene, the miner-specific text says: "And so he left the planet, adrenaline still rushing through his veins"

Tactics

 * The Miner's primary attack, CRUSH, is one of the strongest, and most useful in the game. Unlike most other melees (Acrid/Merc), he isn't forced to budge forward while swinging, so he can sit on top of ledges and batter helpless foes on a slightly lower platform.
 * Additionally, CRUSH has a much longer range than it's animation would imply. To get an idea of exactly how far it can reach, simply spend a few seconds battering a Lemurian in the first stage without moving and watch how the creature is pushed back before your attacks cease to hit him.
 * The Miner is all about crowd control. His attacks work okay on single targets, but are truly meant for huge crowds since they damage all foes in range equally. Because of this, the Miner excels at wiping out large groups of enemies, rather than dealing with them one-at-a-time.
 * Words of advice: Don't believe in yourself believe in the me that believes in you. Your drill will be the one to pierce the heavens.