A Blob's Tale 2 is a fun, quick little platformer/puzzle game. You should play it.
AWD to move and jump, E to use the shield once you have it, mouse to aim the shield and throw your boomerang, Space bar to interact with levers, gears and puzzle pieces, and to pick up the shield. You have infinite lives, but there are really only 4 places you can reasonably expect to lose one, so it shouldn't take long to get all the medals in this game.
First Death (5pts) - Life after death. Die.
Can't Get Enough! (50pts) - Replay the game. Start a game, then close the window. Then come back and continue your game. You may need to move off the first screen in order to do this.
I Don't Need Lives! (100pts) - Finish the game without dying. You actually only need to make it to the final boss without dying.
Kill The Main Boss (100pts) - Defeat the main boss. You heard the man!