I loved the game graphics It reminded me of some cartoons I uswed to watch when I was younger.
The gameplay and the soundtrack are cool too... BUT I felt the difficult setting was a bit HARSH for solo players... I only managed to beat the slime boss (sub-boss?) on EASY!
Aside for the difficult spike, I loved every other things about the game (even the "slang" they use in the dialogues - that was REALLY nostalgic for me!).