Wow, very cool game!!
But all the texts disappear way too quickly.
The tutorial messages are not that complicated but they could stay 1 or 2 more seconds each, wouldn't hurt.
And I "think" I won the game but the text disappeared immediately :p
Also, even if you have good reasons to use T as your main key ;) it would be nice to add the space bar as an alternative usable button (with the same effect, so still a 1button game).
Very nice, I love the monsters, love the overall aspect, love the gameplay. Kuddos =)