I like it, but I would love to see some actual use for the crafted pickaxe (other than early game). It's no use having a Pickaxe with 1M damage if your workers do 1B damage each...
Its an enjoyable game, but the prices/incomes are still not balanced... 2 crystals for killing a bat??? The cheapest upgrades were around 20,000 crystals so I would have to kill 10,000 bats in order to make a difference in the beginning, later on this 20,000 is worth nothing...
@olinn: you can "buy" jetpack boosts (skips a part of the level) with fuel you gather from crates, this option is given to you only at the start of an episode (in the screen where you also buy upgrades with gems)
@Maisaphia: go stand in front of the giant and wait till he wants to strike, then attack... Do not strike while he can block or he will automatically counter
Try Ingame > Pause and press options > set particles off