Mustached Driller

Got stuck with no way to get funds necessary to get equipment upgrade to continue because a key (and the only remaining minerals on the levels I can access) was behind blocks I can't dig.

I got stuck in a wall..

This was a fun game, but definitely needs some improvement to be Great. A few thoughts to the creator:
1. I actually had to restart the game at one point. If you upgrade your equipment to the second tier before upgrading your armor, it's impossible to continue. Some ways to cure this is to remove the first key barrier, or to allow players to sell their equipment for more money.
2. A save feature. This is actually the first game I've seen in a while without a save feature.
3. Some kind of busywork would be nice. Some quests to keep you interested. As it is now It's just dig>sell>upgrade.
4. More levels. The game only lasted me 30 minutes, and that was including the time it took me to get stuck on the second level. A bit more to explore would be nice.
5. Traps. Snakes, flooded tunnels and gas deposits are the norm. This is obviously the most labor-intensive suggestion to implement, but I think the added danger would make it more exciting.

You do get stuck in walls (the miner often stutters through multiple spaces at a time), and without a save function, it leaves you with no options. but to reload the game or close the window.

Somewhat lacking of an ending. Bummer, dude. =(