Anti-Idle: The Game/Bestiary

The Bestiary can be bought from the battle arena shop for the comfortable price of 1,000,000 pixels. Once acquired it can be accessed easily from the bestiary bonus button, inside figure all the monster that the player has killed, with some information depending on the level, plus get a reward from each monster killed, with the reward being dispensed by the number of kills on the monster.

Bestiary Level
The level of each monster is determined by the number of kills of each monster. Being the number of kills needed for each level:

Note: A useful trick is that the Bestiary level is the same as the number of digits in the kill count.
 * Level 1, 1 kill, +1% EXP/Coins | Part of Monster Info unlocked
 * Level 2, 10 Kills, +3% EXP/Coins, +5% Pixels | Part of Monster Info unlocked
 * Level 3, 100 Kills, +6% EXP/Coins, +15% Pixels, +2 sec on all buffs | Part of Monster Info unlocked
 * Level 4, 1.000 Kills, +11% EXP/Coins, +32% Pixels, +5 Green Coins, +3 sec on all buffs, +0.1% to all boosts, 15% Progress
 * Level 5, 10.000 Kills, +22% EXP/Coins, +58% Pixels, +10 Green Coins, +4 sec on all buffs, +0.2% to all boosts, 30% Progress
 * Level 6, 100.000 Kills, +40% EXP/Coins, +97% Pixels, +15 Green Coins, +5 sec on all buffs, +0.2% to all boosts, 50% Progress

Exception: 0 kills is not a level 1 entry (Yes, this is a very Captain Obvious fact) Effect of Monster strength on rewards:
 * Yellow-named monsters ("Too Weak"): 100% EXP/Coins, 100% Pixels, +3 Green Coins
 * White-named Monsters: 130% EXP/Coins, 150% Pixels, +6 Green Coins
 * Red-named Monsters ("Too Strong"): 160% EXP/Coins, 200% Pixels, +9 Green Coins
 * Boss (purple named) Monsters: 160% EXP/Coins, 250% Pixels, +12 Green Coins